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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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How do I change Rigid Body Simulation speed in EEVEE?

I need to change Simulation Speed on Multiple Rigidbodies for a simple animation that looks weird because the Rigidbody simulation is too slow.
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Force Field/Rigid Body Rotation

I'm trying to sort of float objects towards the camera and have them drift rotate. I have set up a force field and a turbulent force but they only seem to be effecting the position of the objects and ...
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Export multiple simulated falling coins as single rigged object

I'm dropping a bunch of coins onto the floor. I want to export a single object consisting of one mesh and and one armature with one keyframed action for use in Unity. I have successfully converted a ...
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23 views

Rigid body simulation not interacting with objects that have an array modifier

I'm trying to animate objects falling onto a conveyor and falling off the end. I'm using a conveyor belt constructed by using an array and curve modifier to pattern the segments around the curve. ...
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Rigidbody - Change Dynamic simulation to animatic

I have an issue with the physics system (as you can see in the title haha). The problem is : I have an animation where an object (dynamic) rebound on a surface (passive - animate). After a while, the ...
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17 views

Torus passing through mesh

I have a sphere that I used the bolean modifier to join to a torus so that it looks like a sphere with a loop attached to it. I linked this a long chain of toruses attached to one final and static ...
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Momentum of rigidbodies in Blender 2.8

I am using Armory3D in Blender 2.80 to do some simulation. Free falling rigid bodies and rigid-rigid bodies collisions seems working. However, I have no idea on how to modify the settings to achieve ...
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Collision Modifier Stops Rigid Body Simulation

I was following Blender Guru's tutorial here and I had made it all the way to the particles when I added the collision modifiers. When I went to play the simulation to see if the modifier was working,...
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48 views

How to properly rig a watch to an arm

So in order to fix the wrist-twisting, I use bendy bone the twist the wrist erea (pic1). But this make the watch also twist too(pic2) . So is there a way to properly rig the watch or better way to ...
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How to hook a rope?

I'm trying to attach some tin cans to a car to create a concept of "just married". I'm confused to apply physic on it. When turning on "soft body" for rope (curve). Hooks I set are not working. And ...
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Blender 2.8 - How do you copy things like rigidbody constraints to other objects?

I found an answer 4 years ago, which is no longer valid for blender 2.8, can anyone help me? update: all suggested solutions are used to copy RigidBody or Constrain, but not "Rigid Body Constraint". ...
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How do I shatter rigid bodies on edges

So, I'm creating a rigid body that I am going to throw and I was wondering, is there any way to make the rigid bodies break apart on impact (Similar to the cell frac add-on) except on the edges?
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Is it possible to make physics respond to the effective mesh after a displacement material has been applied?

So let's say I have a procedurally heightmapped plane (texture -> displacement -> material output) and use the Cycles-exclusive "Bump and displacement" option. Is it possible to have rigid body ...
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25 views

Softbody + Rigid body = nightmare?

I've been experimenting to see if a Roger Kilimanjaro style render loop is possible in Blender. From my efforts so far I've learned that mixing Soft Body and Rigid Body simulations poses some ...
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bone's are not selecting

please help me, i can select main bone in object mode and pose mode. i can't select all other bone's . when i creat single bone and extrude after there are same issue, i also select first bone in same ...
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Cloths cant see imported models?

Both the Human figure and the slab are imported. even after setting them as collision object, the cloth passes through them and settles midway (ref. pic). I have made another slab and added a cloth ...
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How to change initial angle of rigid body Hinge Constraint?

My scene is a toggle of sorts that a ball falls on. A rigid body hinge constraint allows the toggle to pivot and a limit within the constraint keeps it within about 25 degrees to either side. I want ...
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Negative Mass for Rigid Bodies

I'm trying to create rigid body balloons in Blender, but I can't figure out a way to make them work. I've tried using multiple rigid body world groups, but that doesn't work the way intended. I know ...
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Blender 2.8 - How can rigid bodies be moved after physics simulation?

So I tried to follow this tutorial because I want to make myself a gold texture. After I have done the physics simulation I realized, I cannot move or duplicate the coins in any way. They snap back to ...
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What is The Effector Collection and what does it do?

It has the field weights and a collection for it so how do I use it the Blender docs(at the bottom of the page) dosen't have much on how to use it
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Is there a way to make particles act like rigid bodies

From what I know there was an add-on that that allowed this but that add-on is support was stopped in blender 2.77 Here is the add-ons website
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1answer
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location info of objects not changing in any frame for physics simulation (but their position changes) [duplicate]

I am new to blender and using it for generating a dataset for another problem that I am working on. I use physics simulation to make objects fall. The problem I am facing is that the object.location ...
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1answer
54 views

How to get a proper elastic collision in a rigid body simulation

I'm trying to make a rigid body based Newton's cradle in Blender 2.80. At the moment my setup looks like this: The constraints are hinges, rotated so the balls can only move left to right. After some ...
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1answer
26 views

Can a custom optimization code be added for doing accurate mesh deformation simulation in Blender?

I am interested in doing a crash test on a motorcycle using my own optimization code. I typically use engineering software such as ANSYS do perform CAE. I would like to know if Blender is equipped ...
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24 views

Delete/disable constraint during animation

I have a rope made of rigid bodies with constraints in between each one to connect them and I would like one constraint to be disabled during the animation so that the rope splits in the middle. How ...
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Rigid bodies connected by using 'point' rotate around a corner vertex (not the centre)

I am making a 'rope' using connected rigid bodies. Each small rectangle is a rigid body connected using the type 'point' which allows for rotation. 'Generic' has the same effect (https://docs.blender....
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Inconsistency between Scale transformation and moment of inertia in rigid body simulation

I think there's an inconsistency with the scale transformation and the apparent moment of inertia for a mesh object. After importing a mesh (ply), scaling it down to 1:1000, setting its mass to 1 kg ...
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Rigid body bouncing ball

I have added rigid physics to my object and the floor. The object falls and bounces off the floor. How do I make this happen at a different keyframe? Currently it only does it at the beginning. Ive ...
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38 views

How to start momentum in blender 2.8

I'm working on a pistol firing animation and I want the shell casing to fly out of the gun and have physics figure out how it comes down because I find animating objects mid-air very difficult. So I ...
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1answer
48 views

Can anyone help me rig a watch escapement?

I have this modeled already but I have no idea how I can properly rig for animation. I am specifically looking rig and animate the flat spring underneath. I would love to figure out how to simulate ...
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1answer
87 views

Physics in blender 2.8 - can't interact with objects while simulation is running

Do this in both blender 2.8 and 2.79: Create cube, enable rigid body physics, set to active, run animation, drag and release cube. In blender 2.79 cube will act like a real life object, that is, it'...
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1answer
32 views

Glittery smoke in render and viewport

I'm rendering out this smoke sim and my smoke is glittery. Why? My smoke's Resolution Division is 100 with a High Resolution Division of 2. And it is a smoke sim based off of particles. Here's a link ...
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1answer
45 views

Rigid Bodies dancing around

I have active rigid bodies on top of a passive rigid body. When I play the animation (no keyframes involved) the active rigid bodies start dancing around. See this GIF.
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35 views

Multiple objects to particles

Is there any way to add multiple objects to a particle simulation (emitter) without having to join the objects before adding them to the sim?
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Rigid Bidy acting strange

I'm working on some rigid bodies, and I'm having some strange reactions. As you'll see in the GIF , the little pieces just keep on rocking. They each have a weight of 1kg.
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RigidBodyConstraints flashing when start animation (left connected parts randomly) Blender 2.8

I use RigidBodyConstraints and fantastic... but.. when generate animation in the first time work like a charm. When play from cache (space) then flashing and left a connected parts randomly. I can't ...
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37 views

Having trouble 'throwing' rigid bodies with velocity

I'm trying to throw a sphere with a horizontal velocity in a similar way as in this video https://youtu.be/TFseMPGRz1Q. I have the initial location keyframed on frame 1 and the new location keyframed ...
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Rigidbody bouncing after scaling down (mesh collider)

So after scaling down a mesh it started bouncing up and down, sort of glitching sitting on a plane. I've applied scale, recalculated normals, and tried many others but it just doesn't work. This ...
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119 views

How do i fix rigid body constraint problems in blender 2.8?

I recently downloaded Blender 2.8 and decided to test out some rag-doll physics for fun. However, after opening an old Blender 2.79 rag-doll project into 2.8 I found that my rag-doll was glitching ...
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1answer
50 views

Bouncing ball deflates when hitting surface

Plane has a collision. The ball has a soft body. Bending of 5. turned goal off. I baked and when I animated I get the image attached, How do I keep the shape of the ball normal with a minor bending ...
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91 views

Active rigid body objects fall through other passive rigid body objects

I am designing a Galton Board, so I have a group of marbles, which are active rigid bodies, and then I also have a bunch of rectangles, which the balls are supposed to hit and then veer off. And ...
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Why my rigid body act differently when I have small adjustments in simulation?

I have this simple rigid body cube simulation where the red cube is active while the rest of objects are passive when the simulation starts, this cube will roll all the way down, bounces and fall ...
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How close can blender simulations get to reality?

can blender be used to simulate the real forces that are present in a model and can it be used to optimize model shapes? i have tried looking for examples online but found nothing that is satisfactory....
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1answer
132 views

Operator bpy.ops.rigidbody.object_add.poll() failed, context is incorrect

Here's a simple code that works fine as far as the .blend file with the object I'm modifying is already open. ...
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1answer
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Simulating balls falling into a mesh. Why do I get different results each time?

So basically I've an array of about 700-800 spheres that will fall into a box. What I am trying to do is, after the balls settle they spell out something. I did that,by going to the last frame of the ...
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Rigid Body Problem [duplicate]

I have been trying to do Rigid body physics tutorials, and I keep running into the same issue. To show my problem, I did a basic cube with a basic sphere.I delete the top face of the cube. I add ...
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My simulation acts like there is an additional face [duplicate]

I deleted one face of a cube to make a box with an opening. But when I play the simulation, the objects act as if there is that face which I have deleted. Why is that?
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Why are some rigidbodies falling through passive objects and others are not?

I've been trying to simulate a chain falling onto a platform, but after I've applied active rigidbody modifiers to all links of the chain, and applying a passive rigidbody modifier to the mesh below, ...
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1answer
84 views

How do I simulate a rotating, wobbling and falling spinning top…?

looking to physically simulate a spinning top in Blender. I'm a moderately experienced Blender user, but not very familiar with its physics systems. At the moment I have the (rigidbody) top spinning ...
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Rigid Body Simualation not working properly

When I place a cube upon another object(the rigid body type of the cube is active and the other object is passive), and start the animation, pressing Alt+A, the cube gets displaced as opposed to ...