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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25 views

Sometimes, rigid body works!

I'm trying to simulate a very basic rigid body setup. I want it to start from frame 297 (not from the beginning). I do this by animating the Dynamic property. Everything works but at the first few ...
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destroy simulation [closed]

I need your help. I can't make this animation. please help me.
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Physics Issues: Objects set to Active nor behaving has they should be

I'm exploring some tutorials about force fields and rigid bodies, and i found this tutorial: https://www.youtube.com/watch?v=ZG_ZMnKzVTQ All went well, i had just completed the tutorial, but out of ...
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1answer
18 views

Applying transformations at end of animation

I've used the Blender rigid body simulator to position several mesh objects on the ground in a scene. Now that they are all in place, I'd like to keep them in their new positions when I remove their ...
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How to properly set up multiple forcefields effecting eachother?

Dear Blender Community, I want to create an animation were magnetic objects interact. Therefore I set up a scene where objects are pulled to a central forcefield. Additionally I want every object in ...
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1answer
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Best way to animate a moving canon(shot)?

Im animating a shipbattle and want to animate the canonshots inbetween. The project is unfortunatly above 150mb at this point. I have a canon model, seperated into a stand, the canonbarrel and a ...
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1answer
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Rigid body - objects randomly snapping together

I've tried playing around with substeps and solver iterations, and the collision shape + margin. Nothing helped yet. The size of the objects are 0.08 x 0.01m
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17 views

Rigid Body problem

i have a problem with an animation, i have a wheel that must spin when enter in contact with a ball, when i try to put the ball, the ball move the wheel, but pass through some parts of the mesh or it ...
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1answer
20 views

Blender Rigid Body Physics issue

I want some balls to fall into holes with gravity but the balls pass without falling into the holes.
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1answer
13 views

Physics Colliders Explode Array of Blocks Prematurely

I'm starting to play with collision physics in Blender 2.82 and have created the test array of blocks that can be downloaded from https://drive.google.com/file/d/1yMamDjInBclLC0ebdKVlnSzI_K7b8Wqq ...
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Problem simulating rigid bodies for chains with compound shapes

I've been trying this example from David here with compound shapes to create chains. https://blender.stackexchange.com/a/203405/66925 If I open the file, it works. But if I delete the bake and try to ...
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1answer
238 views

Physic simulation hitting non existing face [duplicate]

I'm trying to make a simple animation: ice cubes falling into a glass. I modeled my glass, my cube and applied Rigid body behavior to them (Active/Passive). But for some reason (probably me being ...
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1answer
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How do I make rigid bodies use a curve guide force?

It seems some force types do not effect rigid bodies, does anyone know which forces can actually be used on rigid bodies? In this case I'm trying to get 'debris' to get 'sucked up' by, and carried ...
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2answers
167 views

Is it possible to change the gravity of a single Rigid Body in the scene?

I have tried to make a small rigid body animation in Blender 2.92.0, where only one of the objects is floating, while still interacting with the other rigid bodies in the scene, that are falling ...
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1answer
33 views

Floating rigid bodies not affected by wind (2.92)

I'm trying to make some floating rigid objects blow away in the wind. I have applied a rigid body to all of the objects separately, and have a wind force field pointed at them. When I hit play, the ...
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1answer
13 views

Track simulation jittering & Instability

I will start by posting a video illustrating the issue: Track issue To put the issue in words; the tracks will randomly jitter along their respective axis. This is not limited to the one area shown in ...
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how to make rigid body react to the wave modifier or animated shape keys in blender ? (Or let's say animated vertices/faces if that matters )

I have created a plane with animated wave modifier, applied scale and location as well. On top of the plane there are few cubes with active rigid body. I want when the wave comes cubes on top of ...
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14 views

Generating sound linked to height value of certain object

I've been experimenting with physics simulations and i thought it would be great to also simulate sound. I dont need anything special just take the height value of an object and put it into a ...
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1answer
44 views

initial velocity for simulating planetary motion

I was going to simulate planetary motion in blender and i have simulated the gravitational attraction between two planets with rigid body and force field. but i don't have any idea about how to give ...
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22 views

Does anyone have any experience in causing metal deformation on cars? (Beginner)

I am creating an animation of a car crash. So far, I have the cars placed as rigid bodies which their wheels/tires as separate parts that are rigged to the body via rigid body constraints. I have ...
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1answer
65 views

How to avoid tube overlap in rigid body simulation

I created two tubes by Bezier curves and add sodify modifier to them with a small thickness. And add rigid body and collision to the tubes. I check the normals, upscale the steps per second and ...
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Export animation of many rigidbodies as a single mesh

I have many rigidbodies that simulate glass fracturing. I would like to export this glass animation as an Alembic to use in Unreal Engine. But first I want to merge all the meshes into a single mesh/...
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2answers
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Cannot figure out rigid bodies. Can anyone help?

I am trying to learn rigid body physics in Blender. I setup a simple test enviroment with two cubes and a plane and am trying to get the cubes to get one cube to push the other cube respectively. I ...
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1answer
62 views

Rice meme simulation

I am trying to simulate the "rice challenge" that is the latest meme with them kids, see this youtube video for a fun example. This is my best result so far: (Video: https://i.imgur.com/...
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1answer
28 views

Rigid Body Physics

I created my vehicle and added rigid body physics to it. It now moves in an animated fashion when on a plane but it drops at the beginning of the animation and it moves really slowly. Is there any way ...
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0answers
20 views

Golf club and ball: Adding Initial Velocity to a rigid body simulation:

I'm trying to make a simple golf club hitting a ball (will become part of a larger rube goldberg machine at somepoint hopefully). Just playing with rough settings at the moment before modelling but at ...
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1answer
29 views

Using Physics vs Rigid body Animation

I'm having an absolute fail at the moment. I'm trying to do a very simple golf club swinging and hitting a golf ball. Before proper modelling I was experimenting with bits and bobs and failed ...
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1answer
64 views

How could I run a Rigid Body simulation backwards after it is baked?

How could I take a Rigid Body simulation (it doesn't matter if it is already baked or not) and reverse it before rendering. I do not mean reversing the clip after it is rendered (mentioned here). I ...
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23 views

How to make raindrops fall onto an object?

I have a solid effector object and to put it simply I just want it to get rained on. Ideally I'd like to have a Mantaflow emitter above the object simulate raindrops falling onto it. —— I've been ...
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How to make a cell fracture glass pane not break so far away?

I have this wall with the cell fracture addon used on it: I want this object: To make it look like a simple glass window breaking, but instead, it shoots all the pieces of the wall everywhere: How ...
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1answer
24 views

Rigid body following path

I'm trying to make a rigid body sphere follow a path while it rests on another rigid body, which I'm tilting in different directions in order to balance the sphere, but I'm not having much success ...
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Rigid Body Constraint must be toyed with after Append

If I run the timeline in this file, my Balloon object Rigid Body Contraint is held by the Grip (doesn't rise). However, if I Append this file (Collection "balloons") into a New file, the ...
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1answer
23 views

Rigid Body and directional constraints

I would like to be able to 'push' multiple Rigid Body objects up along Z-axis (using another Rigid Body). The trick is that they must only move on the Z. And once pushing force is gone the objects ...
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36 views

How to display moment of inertia Blender 2.91

I'm making a wind turbine simulation in blender, and it needs to be roughly physically accurate. I know that blender must have a way to calculate the moment of inertia of a spinning rigid body, but is ...
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1answer
40 views

Rigid body simulation of helical gears/oblique pressure vectors

I have two meshes of helical gears. I tried to simulate their motion using rigid body physics. Both gears have hinges connected to a static mesh, and one of them has a motor. When I press play, the ...
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3answers
80 views

Non-wrapping rigid body rotations?

The simulated transformations of a rigid body can be read out through .matrix_local, .matrix_world, and animation drivers set to ...
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1answer
11 views

Animating active object issue in motion tracking project

Why won't my 'meteorite' continue forward follow-thru even though set as an active object in the Physics tab? • Project for school - to VFX a meteorite striking building • Must finish by this coming ...
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1answer
68 views

Is blender good for real physics simulations?

I want to make some simulations which present some real physics problems like box sliding from slope with friction. Does blender use real physics rights to animate simulations or is it only ...
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1answer
32 views

How to make one object pass through the holes of another?

I'm making a connect4 animation, I've made all the pieces for it, and I'm using rigid body physics to simulate the piece dropping into the board, but it stops when it hits the top of the board, as ...
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0answers
12 views

inclined plane with friction

I want to make some physics visualisations with module Rigid Body. I started with a simply simulation of sliding box across slope to check how this module works. Using Python I create plane and box ...
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AWS advice for rigid body simulations

Im using rigid body simulations to generate lots of small objects falling into a box for a project, this works well on my workstation but I hit some issues when trying to scale up the problem to have ...
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Move/Delete an unused passive R-Body affects other objects

I have isolated a Bezier curve I want to delete from my scene, however deletion causes the Cloth "Ribbon" to sever from the attachment to the Cloth balloon. And more oddly, moving the ...
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36 views

Destroy a building with an object

I have this building model and I want to have a sphere flying through the air destroy part of the building. The building model I have is only a outside mesh with no interior. I tried making a ...
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23 views

How to rig a briefcase that has a hinge, and rotates dynamically as the handle moves?

So I modeled a briefcase prop for my character to hold in a practice animation. I would like the character to hold it by the handle and as he moves it around, the briefcase will swing on the hinge ...
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1answer
53 views

constraint one object within another & then rigid body

I am completely new to blender so, if the question seems incorrect or stupid, please excuse & guide me to relevant site/page. Here is what is want to achieve. I have the red object (it is a ...
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1answer
47 views

Baked data 'not exact since frame -1'

When I set simulations(tried smoke, rigid body, hair dynamics, and cloth so far) to start at negative frames, I always get this message above the bake buttons: There's also a gap in the bar on the ...
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31 views

Rigid body chain breaks

I am a beginner of blender. I tried to create a chain link using rigid body simulation. But for some reasons, the chain link breaks. I have tried to turn the parameters including mass, margin ...
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1answer
34 views

Rigid Body not working with Passive / Animated / Mesh / Deforming

I've read other issues that look similar but this doesn't seem to be what I'm experiencing. I'm making a conveyor belt type thing. The conveyor belt is a long array of blocks (array modifier was ...
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2answers
118 views

Rigid body animation problems (coin pusher animation)

Im trying to make a coin pusher animation with rigid bodies in Blender. I have a few problems. The 5 coins on the 'pusher' itself dont fall down. They stay on the same level. They dont join and ...
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1answer
60 views

mesh collision rigid bodies acting very strange. (bouncing, shaking, etc…)

I am currently using blender version 2.92.2, and I am making a simple rube Goldberg physics simulation, however, for some of my objects I will need to use rigid bodies that have mesh collision instead ...

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