Questions tagged [rigid-body-simulation]

Questions pertaining to Blender's built-in rigid body physics simulator and rigid body simulations in the Blender game engine. Rigid body physics are used to accurately calculate dynamic motion of non-deforming objects.

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Rigid Body Crash when switching between MacOS and Windows

I'm a relative newbie on Blender 2.83 and have an infuriating problem when attempting to edit - on a Windows 10 laptop - an animation containing a rigid body simulation originally created on a Macbook ...
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Running simulations and extracting data from Blender for analysis

Suppose I want to build a scene in Blender where many balls collide. Once everything has settled, I want to find out if a particular ball has rolled outside the circle, where the collisions occurred. ...
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Animating a simulated object in Blender

Cube - Soft Body; Plane- Rigid Body + Collision I tried to animate the cube from the 55th frame till which the simulation is baked. But when i tried to move the cube its not moving instead the origin (...
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How to animate paper tissue pulled out from a box?

how to make the animation of pulling out a piece of paper tissue out of this container? I am a freshmen of animation, not sure which would be the right direction to dig into. Seems like it could be a ...
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How can I catch Rigid Bodies using a Cloth in Blender 2.83?

The Problem So far I have not been able to perform a Rigid Body simulation on one object and a Cloth simulation on the other and have them interact with each other simultaneously. The effect I want to ...
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How to put an active rigidbody inside the other without crossing the other during the simulation?

How to put an active rigidbody inside the other without crossing the other during the simulation? I'm trying simulate physically a motor, now I get the problem when the motor shaft crosses the motor ...
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2.7x vs 2.8 difference in rigid body interactions?

I am attempting to have a falling rigid body interact with a cloth object. My use case is nearly the same as this existing and solved question: Cloth collision with an object However, that question's ...
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Clothing falls through model even with rigid body physics

I've been trying to figure out how to add clothing to models for a couple days now. I've looked at about 5-6 tutorials and followed them step by step and I still am having this irritating problem, I'm ...
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18 views

How to make splash on2. 83

I'm new to blender, just trying to understand some basic tools on blender. So I tried converting a cube to container that the water will be on and adding a sphere which will drop on the container ...
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Animating active object in physics simulation

I would like to pick an object from a conveyer belt.but I find difficulty in animating the active object(rigid body simulation) and assigning 'child of' constraint to the active object which in this ...
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Comparable systems between 3DS Max's Reactor physics system and Blender's physics system

I'm currently working on on a script to support exporting content for Halo 2 Vista in Blender. The original tools worked in 3DS Max with Reactor support. Reactor being a physics simulation setup using ...
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How to I can see the object rotation value being changed during the simulation?

The image below by example, in the simulation the "Axis" object was being rotated by a motor ridigbody constraint, I want see the rotation value changed during the simulation, but when I see ...
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Why are my rigid body objects falling out of their moving container?

I have created a lottery ball cage as it were. The cage is a passive rigid body. Inside the cage are about 200 lottery balls with rigid body active settings. The cage spins for about 20 seconds, then ...
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How can I make objects go through holes?

I made a funnel for one of my blender projects for a rigid body object to fall through but whenever I run the simulation, the objects stops at the bottom hole. It is completely small enough. My only ...
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30 views

How to get rigid body to collide with inflated soft body?

I have a mesh that inflates, that is meant to land from a short height onto a floor, which is a plane. This sets the scene as a kind of inflated balloon/pillow on the ground. Then I want a rigid body (...
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How to simulate behaviour of the spring?

I have modeled a spring with SCREW modifier, placed it in a cylinder which is attached to the ground and I would like to run a simulation where the spring should compress when a cube fall on the ...
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Meshed and skinned rag doll

I've been trying to make a meshed rag doll, but I just can't figure out how. I need to be able to put an actual texture on it, as I'm using this in a VFX shot. Any ideas? Edit: I followed this ...
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Why do my rigid body objects have gaps in between them?

I have tried to make a rigid body simulation to make apples look more realistic but when I start the simulation, apples are not touching each other they have a lot of space between them and when I ...
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Sensors or Feedback technique in Blender 2.8

I have modeled a conveyor belt of 10 meters length and I would like to place a sensor at the length of 5m on the conveyor so if there are any product on the conveyor moving past 5 meters I would like ...
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Bake to key-frames isn't working properly, and Eevee is using 100% CPU and 40% GPU?

So I'm making a physics-based animation of a ramp with "some" cylinders rolling down it. I started off simulating the physics, then baked the simulation then tried rendering it. Even with ...
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is there a way to constrain selected to nearby objects/face/etc. for more realistic collisions?

So I'm trying to make a realistic bullet animation and I wondered about the following points: is there a way to constrain surrounding objects to the selected? is there a way to select objects/faces/...
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1answer
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Physic simulation is visible in viewport, but not in the animation render

My physics animation is working as expected while I'm inside Blender. When I try to render the animation, the simulation is not running. Every frame is identical (the objects are static). Viewport: ...
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54 views

How do I prevent armature+animation from overriding physics in rigid body simulation?

I've been running into a problem where objects that are animated with armatures do not behave as I expect in a rigid body simulation. I put together an example to show the problem that I'm having. In ...
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38 views

Clay-like deformations

After seeing somebody do this, I wanted to try and make it myself. At around 0:04 in this video: https://www.youtube.com/watch?v=rLha9MJTWfg, there is a clip of some objects falling onto a cube. I ...
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How to move to collide objects during the physcis simulation in blender 2.8.3?

I see this tutorial that uses blender 2.7: https://www.youtube.com/watch?v=ROE15KY97XM In ~18 minutes he collides a passive rigid body cylinder with a active rigid body gear with "G move", ...
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Blender Physics do not work in animation

I have an issue with Animation rendering. I have a sphere, which I have animated with Rigid Body. When I render the animation everything works until a frame, let's say the 14th and then all the frames ...
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1answer
43 views

Molecular add-on particles won't interact with a non-animated rigid body

I'm trying to make molecular add-on particles to interact with other rigid bodies and it appears that they can interact with an animated rigid body, but not with non-animated rigid body. Does that ...
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2answers
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How can I stop my rigid body scene with intersecting objects from exploding?

I tried to look for an answer, but didnt find one. Here's the situation: I have a building consisting of many hundred objects. It is "floating" and the mesh(es) are not connected, so its ...
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How to prevent overlapping of particles/objects in the molecular script?

I'm doing a particle simulation with thousands of particles in order to fill a recipient, however even with options such as "Self-collision" enabled, I still get results where particles ...
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Dynamic chain is breaking when it follows the movement of its parent

I've made a chain composed of several torus with rigid body properties. The first torus of the chain is parented to a face mesh (an alembic file imported) and follow the mesh's movement. When the face ...
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Why does my animation keep freezeing?

When ever i play the animation it always freezes at 349th frame and the timeline bar continues to go but the preview is stuck on the 349th frame please help somebody
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Unbake from keyframes

I am experimenting with rigid body simulations and have an animated cube hitting a stack of cubes and moving around. The problem is, I tried to render and forgot to bake to keyframes, but now that I ...
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1answer
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Book Shelf: Rigid Body Sim- Books thrown out

I'm working on a bookshelf animation, nothing fancy just the books falling into place. I applied rigid body properties to both the book (active) and the shelf (passive). Upon playing the simulation, ...
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keyframe multiple active objects

I want to keyframe multiple duplicate objects created from a active rigid object. I have created keyframes for each duplicate object at different frames of timeline, lets say at frame 10, 50, 90, etc. ...
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Why are my rigid body objects sometimes passing through this surface?

I am designing a dice rolling device that holds three dice in a dome shaped object, but having issues with the dice colliding with the dome. All three dice have the same rigid body settings, however ...
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1answer
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Rigid Bodies - objects exploding and clipping

Well, the title just explains my problem. I have been searching online but cant find any solution for me to understand. At first I started with real lego size blocks and the I read rigid boides arent ...
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1answer
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Rigid Body Issues (Chain is passing through object and not following the mesh)

I created a simulation setup where chains fall on the object and the object moves and physically the chain should move along but it is not happening so. The chain stays there and the object moves away....
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34 views

Set material density [kg/m³] instead of mass [kg]

Is there any way or plugin which allows enter material density in [kg/m³] instead of direct enter real mass [kg] how it is now in Blender. Blender knows the exact size of the object, so it is possible ...
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1answer
53 views

How to attach a rigid body to a cloth simulator

I'm trying to make a parachute that can hold rigid body items as they fall and slow the rigid body's fall. I've tried using wind to make the parachute fall slower, but I can't figure out how exactly ...
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Rigidbody constraint removal removes the object

I recently started playing with Physics. I had two objects which I tried to add constraints to without doing research online. Having done the later I realised I needed to use an empty and add the ...
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How can I make a wall collapse from the top?

I have a wall made up of many cubes and I would like to make it collapse starting from the top, row by row, kind of like a domino effect. I am pretty new to Blender physics and just can't figure out ...
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19 views

Rigid body interaction with boolean modifier

I'm trying to animate a ball bouncing into a portal. The plane has a boolean modifier with the object set to a cone. And after some time I have the cone move up to simulate a portal opening up. ...
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Object not rotating around another object as expected with rigid body physics

I have a wheel with a hole in it's center. In this hole, I place an cylinder around which I want my wheel to rotate when it is collided by a rolling sphere. The wheel, the rotating axis and the sphere ...
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1answer
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Interacting with rigid body objects as animation plays [B2.83]

In Blender 2.83, I do the following steps: create a plane and a cube. Give 'collision' physics to the plane, 'cloth' physics to the cube. run the animation simply move the plane around by pressing 'G'...
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How to delay rigid body animation without preventing object from rotate?

I have a cube located 3m above the floor. I keyframed location and rotation at frame 0. Then I rotate it and keyframed rotation at frame 130. Finally, I added rigid body (active) to the cube and (...
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Is it possible to “make” a curve from a rigid body object that has been simulated?

I'm wondering, if I made a bowling ball bounce on a surface, can I "absorb" the information(location) from the ball to create a curve?
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Delaying rigid body sim not working in my scene?

So I'm making an animation where an object goes around the area "Spitting" monkeys around The idea is that it spits one, then goes to a new area, then spits the second, then the third area ...
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1answer
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How to fix gap between rigid body objects? [duplicate]

I've having some trouble animating my donut. When it reaches the surface there's a gap between the objects, and sometimes the object jitters and bounces when it reaches the surface and I don't ...
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1answer
39 views

How do I disable physics for multiple objects at once?

I'm using multiple rigid body spheres to fill a mesh after I converted them from particles to mesh. Now after a few frames of them jumping around and reaching equilibrium(almost), I want to freeze ...
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2answers
37 views

Whenever I use the particle system to emit from volume, it just ends up emitting from the faces. Is this a bug?

I've just started using Blender particle system and rigid body stuff. I've tried to emit particles from the volume of the mesh but they just sit on the surface of the mesh no matter what I try to do. ...

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