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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18 views

Objects with rigidbody physics slowly vibrate/rotate (Blender v 2.9)

I am trying to animate a simple scene in which apples fall from above into a bowl. I added rigidbody physics to the bowl, made it passive, set the collision to mesh, and set the margin to 0.01. I ...
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2answers
39 views

Setting multiple gravity

I have a war tank freezing in the air and one feather next to the tank, when I press the play I want the tank to reach the ground faster. Even when the weight differ they will reach the ground at the ...
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26 views

Speed up rigid body simulation baking?

I'm making train simulations using rigid bodies and I would like to bake them more quickly so I can tweak parameters more efficiently than before. Is it possible to force blender to use parallel ...
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1answer
18 views

How to simulate static vs kinetic friction?

Rigid Body simulation allows setting bounciness and friction. Is there any simple way to set friction and bounciness to match ...
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0answers
22 views

Rigid body and Zero gravity

I need to animate set of rigid bodies with zero gravity. I don't want to cancel gravity in the scene since I need it for other rigid bodies. How can I "say" to specific rigid bodies in the ...
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4answers
596 views

How to make particles fall and land into predetermined shapes (like text)?

I'm wondering how to approach this problem. I just watched a video on how to get particles to "morph" shapes, but what I'm looking for is more natural-looking... My specific idea is to have ...
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0answers
12 views

How do to use just edges as Compound Parent?

2.91 introduced a new collider shape called 'Compound Parent'. If I'm not mistaken the main idea is to have a low poly parent which acts as collider instead of the high poly child while calculating ...
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1answer
21 views

Radial Limit in Rigid Body Physics

I am looking for a way to allow a rigid body to move freely within some radial distance from an other object. I know generic constraints allow one to box the movement in, but I need something that's a ...
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1answer
34 views

Why are two collections of identical rigid bodies simulated differently?

I have 2 identical collections of rigid bodies with identical settings. They are on different collision collections yet they are acting different when dropped from identical location. I need for them ...
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1answer
11 views

Apply collision collection to a group?

How do I link a group of 100 objects to same collision collection? I don't want to do it manually and ctrl+l link modifiers / collections doesn't work
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1answer
29 views

What might be wrong with ball and chain physics here (chain works but the ball detached with similar settings)?

I'm trying to figure out Blender 2.90 failing to apply rigid body physics to ball and chain. Here's a middle of animation for the problematic case: The screenshot shows that the ball has Rigid Body ...
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0answers
6 views

Blender Alembic export for keyshot

I am trying to export a small physics sim from blender, to open in keyshot. I am exporting the files as Alembic but in Keyshot, none of the animations are taking place, ive tried baking the animation, ...
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7 views

What is the difference beteen Visual Transform and Bake to Keyframes?

Why is it that, Visual Transform and Bake to Keyframes act in a similar fashion. I mean whats the difference between the two?
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1answer
20 views

How to freeze a falling rigid body animation for good?

What I've been trying to do is to make a simple bowl in which candies fall using the the rigid body animations for both. But after say certain key frames I want it to be the final(or rather the ...
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0answers
17 views

Bake to keyframes not recoding any frames

I have simulated cell fracture from frame 600 so i have set regid body frame start form 600 to 700 everything is working fine. When i try to bake the physics to keyframes nothing happens the button is ...
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1answer
24 views

Keyframed Objects Clipping Through Each Other

I am very new to Blender and have made a scene where a mannequin (animated and downloaded from mixamo) is falling through a tunnel. A basic falling animation has been applied to the mannequin via ...
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1answer
31 views

Conveyor belt object fall through problem

I watched a tutorial video and tried to learn how to make a conveyor belt. Everything went well until I put a cube on the belt. Somehow, the cube just fell through the belt. I googled a lot even ...
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1answer
17 views

Active dynamic rigid body object does not move since linked to armature

i have tried everything and it does not move as an dynamic active object. clear parent does not help. it has an "child of" object constraint: There is no passive object. at least not yet. ...
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0answers
24 views

Riggid Body Keyframed

I have a problem. I´m working in blender 2.9.3 i think... And i want that my tesla cybertruck, wich is keyframed, rams my mathe Teacher because he is stupid. But the Tesla doesn´t have any Physiks(It´...
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0answers
38 views

Emulate realistic liquid inside a bottle for animation

I am working on perfume bottle design. I am trying to create perfume in the bottle. When bottle is rotated, perfume stays static. What's the way to rotate perfume when bottle is rotated, or even ...
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1answer
34 views

Rigid body physics only applied correctly in edit mode

I'm confronted with a weird problem in blender's rigid body physics, where the simulation is only applied correctly if the active objects are in edit mode. My test scene: one simple cube and two ...
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1answer
35 views

How to combine Hair and Rigid Body physics?

I would like to combine a rigid body behavior with hair dynamic. I created a sphere with hair all around with hair dynamic on. I would like the sphere with attached hair to bounce of a plane. When I ...
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0answers
25 views

Is it possible to delete meshes that have baked physics?

It took 17 hours to bake 50k small objects all colliding in a container. There are times when some of those objects escape the container and I’d like to just delete those meshes entirely. Trouble is ...
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0answers
19 views

Copying rotation to multiple rigid bodies

Newbie here. I'm on V2.91 I'm trying to animate an exploding in space rigid body simulation. What I find is that the cel-fractured meshes after explosion don't tumble as I'd expect them to. I found a ...
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0answers
9 views

Rigid Body bake finished and then Blender crashed - can I recover it from somewhere?

2.83 - It took 17 hours to bake my rigid body simulation. I got the notification saying "Blender calculation finished" and when I went to click back to the program, it immediately crashed. ...
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9 views

Strange results with hinge and rigid bodies

Can anyone explain me the reason for the strange animation I get with the Blender file you can retrieve here?
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0answers
15 views

Basic cuboid collision mesh not lining up with cuboid, bug?

I've tried to just make a simple staircase out of separate rigid body cuboids. I've made this staircase by taking a cuboid, cutting off faces to make it a staircase shape, then filling in the faces ...
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1answer
29 views

How to create a scene for rendering?

I modeled some earrings and want to render them now. Any tips on how to achieve this type of scene (earrings laying on a fabric/cloth)? I've tried adding a cloth made in Marvelous Designer and made ...
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13 views

Rigid Body Physics: Sliding Pivot Point

Background: I have a cam spinning in a circle which drives a rod forwards and backwards. The center of the rod is fixed to a pivot point in line with the center of the cam, so as the cam spins and ...
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2answers
784 views

One image for all objects

I created a wall with over 100 bricks. I want a logo on the wall. So some bricks will need a part of the logo. What's the fastest way?
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0answers
18 views

rigid bodies constraint to a curve

I need to push a bunch o rigid bodies using another passive rigid body, but this group of objects should be constraint onto a curve therefore leaving them only with one possible path. How can this be ...
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1answer
74 views

Rope Simulation Using Rigid Bodies

I'm trying to model a rope used for a guillotine - after a bit of research I've attempted to model it using a series of rigid bodies connected together by empties acting as POINT rigin body ...
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0answers
10 views

Uniform rigid body constraints

is threre any way to connect a lot of pieces (like fragments form cell fracture) together with rigid body constraints uniformly? When you normally use connect, its just connects all fragments to the ...
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1answer
32 views

Precise simulation / particles help?

I am animating a piece of machinery, and am currently trying to simulate rocks falling into a hopper, then being pushed down the screw. I am open to any method that gets this done. (In the picture ...
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0answers
26 views

Rigid bodies keep bouncing

Can anyone help with the following: I have a rotating frame with cilinders. the cilinders keep bouncing. Also, when there are more cilinders they will bounce even more, and even fly out of the frame. ...
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1answer
27 views

Rigid Body Physics (Collisions)

I am using Rigid Body Physics in Blender 2.83 to have some cubes fall into a bowl. It should be quite simple, but as you can see the result is grossly over-dramatic. What am I doing wrong, or not ...
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1answer
26 views

Could someone find any logic in the rigid body world and rigid body constraints behavior?

I have a scene where I'm trying to find a logic for better understanding of rigid body world and rigid body constraints regularity. The setup seems work as I expected, but when I move the "Vert&...
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1answer
30 views

Part of Object Goes Through Plane When Falls

I am using Blender 2.81a and just doing a Domino Animation. But faced a little problem. When the last domino falls, it kinda goes inside the plane and the comes out. But I don't want that go through. ...
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1answer
23 views

How to make dynamic paint work with rigid body interactions during animation playback

I'm trying to dynamically wave paint a passive, rigid body, wave-modified plane canvas with an active, rigid body, sphere brush via dynamic animation playback. The dynamic painting works when changing ...
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1answer
23 views

Learning Rigid Body Constraints (Slider & Piston) - Active object keeps passing through passive?

So I'm trying to teach myself some basic rigid body physics with rigid body constraints. I have a 2.83.4 .blend file with several collections (one for each constraint I'm trying to understand) and I'm ...
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0answers
24 views

Keyframed rigid body animation won't work

I have a scene with a passive rigid body element (the floor of my scene) and an active rigid body element (the letter "P"). But the entirety of the scene includes multiple camera passes (...
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0answers
71 views

Rigid body animation plays fine in viewport, but once rendered the object behaves differently

I've never struggled so much with a file/animation. The rope just falls through the cylinder when animating. Why is this? Eevee does the same thing. Hoe can I send the file to someone to please assist?...
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0answers
10 views

Cloth collision error with rigid body

What is wrong with animation, when object and cloth falling?
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1answer
17 views

Making a falling object in “Physical properties”-rigid body soft

I have a rigid body simulation of a falling object. Now I would like to make that falling object soft to see how is it deformed when it hits the bottom plane. Where do I set that softness ?
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1answer
32 views

Where are Blender 2.79 and later rigid body constraint angular limits documented?

Summary I can find no documentation on the frame of reference for defining the rigid body HINGE constraint Z axis rotational limits. Blender defaults these to lower = -45 deg and upper = +45 deg. ...
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2answers
64 views

Rigid Body Constraint: how to prevent stretching

I'm trying to use Rigid Body Constraints (type=Fixed) in Blender 2.81 to connect an assembly of rigid and cloth components. a crinoline cage By Crinoline, 1860-1870. Jacoba de Jonge Collection in ...
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0answers
5 views

Replacing rigs in excisting model / linking rig to model - Kinect

Excuse my English, since I am not really good at it. I am a little bit nervous asking this question, not sure if there is already an answer or if I am in the right place. So sorry, couldn't find ...
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1answer
29 views

Rigid Body objects pass through Basket

I am just a beginner of blender. I use the function of rigid body but objects keep passing through the basket. I searched and tried different methods from the internet but still not successful. For ...
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0answers
29 views

Super elastic collision in Bledner-a smiluation

Can someone write for me a .blend file (i.e. a MWE) which would be a super-elastic collision either in 1D or in 2D or finally 3D of 2 elastic balls with ...
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17 views

Blender 2.8 physics passive body does not attract active ones

I have a simple physics setup with a passive mesh supposed to attract active ones. Yet I cannot figure out why it does not. What did I miss?

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