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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12 views

Create a loop of falling objects

I'm trying to create a scene with marbles falling down on a plane, I want to loop this like a long gif to where it seams like infinite marbles falling. The problem I am having in getting it to loop ...
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Rig hierarchy breaking when Appending into a file

I have a rig on a character and I have set up a simple soft body dynamic on it's hair geo (it's a carrot so it's hair is the green stalk). Works fine in it's original file, but when I bring it in (...
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Gap Between Edge of Object and Mesh [duplicate]

Im using a rock generator add on to create rocks, and have been looking at collisions between rocks using rigid bodies. I found that the rocks dont actually collide, but come close, this lead me to ...
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48 views

Only break object when colliding with another?

I have recently been getting into some physis simulations with blenders rigid body. I have a basic understanding of cell fracture and rigid body constraints. Here is what I don't know how to approach: ...
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22 views

Water Oscillations in Tipping Tray

I'm trying to create a simulation of a tray tipping backwards and forwards with water inside it, that is oscillating in waves, (like it would in real life). I am a Blender beginner so I have no idea ...
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228 views

Setting up complex gear physics

I want to set up a rigid body system of gears hanging off gears. The picture shows what I want to happen: The small green gear rotates in place, the big yellow gear is hanging off it. The small ...
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21 views

How to improve animation quality of rigid body simulation

https://en.wikipedia.org/wiki/The_Method_of_Mechanical_Theorems?wprov=sfla1 I posted a Blender animation on wikipedia which I think could do with some improvement but I am not good with graphics.  ...
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20 views

Why is my rigidbody broken?

Both rigid bodies have mesh collisions.
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15 views

Rigid Body 'Start Deactivated' not working?

so I made this animation where a circle is expanding and should hit the rocks floating around it. The circle has a torus around it which is parented to the rest so it follows. I made the rock pieces a ...
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23 views

How do I prevent trilobe shaped particles from passing through to the outside of the container like so?

Already made sure that: The trilobe mesh is triangulated for simulation stability(Ctrl+T in edit mode). The normals are pointed inwards for the cylindrical container. The normals are pointed outwards ...
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Hook moves from vertex during rigid body simulation

Hi, During my rigid body simulation the hook is riding up the side of a ball rather than remaining fixed at the vertex where the join was made. I set the rigid body constraint to Point. How can I get ...
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nurbs path join breaks during rigid body simulation

I joined two nurb paths in inverted T shape to create a scale balance to show the equilibrium reached after the scales are swung around a pivot. The initial position is raised at 60% and I am ...
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15 views

compund parent rigid body doesnt work as expected

this compound method is better for some complex chain shapes or other models according to this tutorial https://www.youtube.com/watch?v=M5zBqQELdVU but i am not actually getting nothing of good ...
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49 views

Blender rigid body Bullet implementation unstable? Compared to Lightwave 3D Bullet implementation for sanity check

Long term Lightwave3D user switching to Blender. I like a lot about it, however this has me baffled: I have been trying to get Blender's rigid body dynamics working for some hours now and I just can't ...
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34 views

Cube with rigid body does not fall

I downloaded the compound collision change example from blender demo files and just added a cube with a rigid body in there. It does not fall at all. I tried to delete bake and baked again -> same ...
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1answer
35 views

Nurb path not rotating or moving in lower section of double pendulum

I would like advice on best approach to simulate double pendulum as rigid bodies. I tried 3 UV Sphere connected by strings as nurb paths extending a youtube simple pendulum Blender example which I did ...
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47 views

Why do objects keep passing through the cylinder?

I've written a code to drop trilobe shaped objects one at a time into a hollow cylinder in Blender, but instead of settling at the bottom, the objects keep passing through to the outside of the ...
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26 views

Why the character become strange after auto rig?

I made a model in blender, try to rig it with bone created by myself. It became screwy in some places(Hip,Shoulder...), I have meet this problem many days. My File is here. I follow the tutorials on ...
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21 views

Why does my RigidBody jump weirdly in the begining of the animation?

As soon as the animation starts the top of the box weirdly jumps or wiggles, depending on wheter Mesh or Convex is selected. Here is the download of my project
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14 views

object shrinks whenever I give it rigidbody physics

I am trying to make this helmet that you see here below, interact with the ground using rigidbody physics. However, when I give it an active rigidbody and push play on the animation, the object ...
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9 views

Partial delete of rigid body cache

Is it possible somehow to delete some of the rigid body cache data? for instance, if I have a 2000 frames simulation and I realize that I need only the first 1000 frames - is it possible to change the ...
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24 views

Object>>rigid body>calculate mass: mass estimates are bit out on shape created using Maths Mesh tool

I was hoping to use Blender to calculate the mass of shapes with curved surfaces. To start I took a 1m cube and performed a boolean difference with a parabolic curve (x=0 to 1m)that was extended ...
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1answer
16 views

How to make rigid body flying

Usually setting object with rigid body active will go down, is it possible to object go flying up?
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1answer
28 views

Falling object in specific time [duplicate]

I want the object falling start from frame 250 until 350. But, I can't find where to set it. It always starts at 1.
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1answer
42 views

Bake action with euler rotation instead of quaternion

there is a problem that baking actions with Euler rotation creates a flickering rotation in the keyframes. The problem can be solved by choosing quaternion as rotation but I need to export the ...
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How can I make an object fall at a certain keyframe?

Hello, I'm making an animation with scripting and I want a ball to start falling and hit another object (this case a lightsaber) at frame 20. This is (one part of) my code so far: ...
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1answer
88 views

Objects forced out of container using rigid body physics

I am using the rock generator add-on and dropping rocks into a container (consisting of 4 reshaped cubes) - see attached picture. The rocks are dropped from a random height into the container and I ...
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21 views

Object glitching/dissapearing in render [duplicate]

I have completed my animation but I realised when I render it that one of the propellers blades starts to glitch. On some frames it is in shot and some it is out of shot and this is really strange. ...
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18 views

Split big rigid body simulation file

How to split a big '.blender' file into multiple files that are less than 500MB? For instance, if I have a rigid body simulation that sits in a file that is about 1.5GB and consist of 4000 frames, is ...
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1answer
21 views

Determining the optimal suspension location for jewelry

I'm creating jewelry with Blender and I'm wondering about finding/calculating the optimal suspension location. Looking at the image I uploaded, you see a small eyelet. I've used the chain simulation ...
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23 views

Soft body not staying contained in rigid body

I am fairly new to all this but I have been trying to do a motion graphic of a (balloon-like) soft body inflating and staying contained in a rigid body (cage). I have set the inside sphere to 'soft ...
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15 views

Aligning the meshes of two scanned fragments of a 16th centruy wooden altar piece for glue joint analysis

I am working with photogrammetric 3D models in the restoration of wooden cultural heritage. I use the digital 3D models to analyse the gluing surfaces of two fragments of a wooden altar piece from the ...
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36 views

How to change armature pose with ragdoll?

I can’t figure out one thing that confuses me. Or I am misunderstanding something. Let’s say I made a rig, at least for a human model, at least for a worm. I can change the pose however I want, and ...
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25 views

Physics are causing my objects to float without specific paths

So I turned on rigid body physics and cannot for the life of me figure out why my objects are just floating around now. I didn't have this problem at the start of this scene. My gravity is still ...
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53 views

An object inside in another object with physics properties - rigid body

I am trying to create a physics simulation, but I not succeed... What settings should I use for rigid body if I want to create an object inside in another object with physics properties (rigid body) ...
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1answer
46 views

Why do rigidbodies snap back when keying “animated”?

I know this question has been asked before, but no one has properly answered it. I am trying to animate two rigid bodies on a curve to hit each other at a certain point, but upon keying "Animated&...
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1answer
31 views

Physics: Rigidbodies sticking together and softbodies not retaining shape

I am trying to simulate a car crash in Blender 2.8, but during the simulation, several errors occur. The meshes seem to stick to each other, most likely the rigid bodies, and they will continue to ...
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18 views

Objects move when Bake Simulation

I am new in Blender and I have a problem related to the position of the Objects when I Bake a Rigid Body Simulation. I have a "wall" object with Rigid Body and I want to Bake the Simulation. ...
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1answer
15 views

Basic Rigid-Body Setup: Displays perfect in Render preview but is completely broken in the actual render

This is my second consecutive project where I follow a tutorial to The Letter and it does not work. This time, it's this basic Object Breaking Animation by Blender Made Easy. While I have spruced up ...
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15 views

I have two objects, and want one to be cell fractured at the beginning and the other after some time

I made an animation in which the sad characters head falls down and breaks into pieces, and then his body is shattered to the ground, but when I cell fracture them, they both break at the same time, ...
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15 views

How to use rigid body and amature at once?

i only can use the amature on frame one. but then it is lost. here can u see it in a video https://drive.google.com/file/d/1ivi7jyhBLwWyO7b0jqbG7E31GrsrnSfs/view?usp=sharing
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4answers
195 views

How could I create this huge knotted blanket?

I am modelling an interior scene and I need to create a blanket. Thing is, its made up of lots of small knots, and though usually I'd just use a texture, it seems really easy to tell that its not ...
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1answer
44 views

initial velocity for a rigid body simulation: a ball rolling on a skew plane

I can do a falling torus onto a plane, but I wanna have a modification: a ball moving upwards on a skewed plane and then slowing and increasing the velocity in the opposite direction as would physics ...
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1answer
28 views

Why doesn't the object fall into the other object? [duplicate]

I want my small object to fall inside the shell of the larger sculpture. Why does it just hit the top plane of the object instead? Thanks!
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44 views

Attach a rigid body system to a rigged mesh (earring)

I made a simple earring for my character : the earring is a low-poly torus set as Active in the rigid body settings, I also have a cube as the passive rigid body, and finally an empty used for the ...
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1answer
22 views

Bounciness in Rigid Body

I tried to make up a rigid body simulation (a torus falling onto a plane) and I have tried to modify the bounciness from 0 up to 400, but I didn't observe any difference. What this parameter is ...
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1answer
42 views

How to make a rigid body go up?

I have 2 cubes, I want them to collide with one “falling” upward and the other downward, i tried to make the mass -1 but it set it to 0.001kg and not -1. How can I make it “fall” upwards
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1answer
50 views

make a body fall into place

I need help in doing a (probably) very simple animation. I want a body to free-fall into an exact location and angle. I've already arranged the "rigging body" physics for the gravitation ...
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1answer
31 views

Ball not falling through hole

I am making a ball falling in a ping pong fashion animation. The final part of my animation is the ball falling inside a cone. I added the cone mesh, deleted the top face in edit mode and added the &...
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16 views

Constraining axis on rigid body

I've been trying to roll a sphere down a slope and I want to constraint axis of rotation (so that it doesn't veer off course) but adding rigid body constraints (generic) or regular object constraints (...

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