Questions tagged [physics]
Questions pertaining to Blender's internal physics or the Game Engine physics.
1,542
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15 views
Blender performance not improving when disabling viewport physics but does when deleting it
I'm having a very simple problem. I'm using dynamic paint to create ripples on a plane mesh. Something perplexing is happening; when I disable the Dynamic Paint viewport icon (so that it will only ...
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1answer
31 views
Animate Soft Body Along Curve (Holding Form)
I'm trying to animated a shoelace along a curve that spells out a word in cursive. I know the simplest way is to just keyframe an offset along the curve but I'd like to have the shoelace being a ...
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1answer
22 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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11 views
Cape stick into body using cloth simulation
I've made a cape for my character using cloth simulation. But the cape's edge stick into body since frame 11 and even climb up to whole arm afterwards. Does anybody know what's wrong with it?
weird ...
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9 views
Why do my hair particles disappear when physics is set to None
As detailed in this question, I'm trying to create a scene with a grassy patch of dirt and I'm having trouble controlling scale and direction.
One of the bizarre relationships I discovered is that the ...
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12 views
How to control scale of hair particles
I'm trying to make a scene with grassy ground, and I'm using a hair particle system to generate the grass. I'm finding it very difficult to control the size,position, and rotation of the particles ...
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11 views
Physics problem - floating object
I am testing cloth physics.
But I have some problem.
Why my object is floating in the air?
Could you tell me how I can fix this please?
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2answers
27 views
Is it possible to make a displace modifier collide with other objects? if not, is there a way to make the food not go through the cooking pot?
I want to make the animation of the displacement to collide with the cooking pot, I already set the two objects with rigid body physics but it just goes through
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1answer
16 views
Soft Bodies Merge Together During Animation
I am trying to get some soft body balls to tumble around in a rotating cube (like a square washing machine). Each time I try and animate, it's like all the soft bodies merge together into one blob. I'...
3
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1answer
48 views
Rigging complex mechanical shapes
I want to rig a small mechanical interaction between two pieces of metal.
In theory it's simple: the upper leaver should get pushed up by the lower one (which is already driven) and then drop down - ...
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0answers
21 views
Trying to Make Zero-G Manipulatable Liquid
Iām basically trying to find a way to control a fluid simulation, or something that looks like fluid, in a way that would allow me to have the fluid follow one point, but still allow it to deform ...
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1answer
23 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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28 views
How to create a liquid meniscus/bridge between two surfaces
I'm trying to model a water droplet between two plane surfaces such that it forms a capillary bridge as soon as the surfaces get into close proximity of each other like in the first figure of this ...
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0answers
16 views
Making a Toothbrush Bristle in Blender
I am taking the inspiration for this mini-project from a contest on freelancer.com. The goal is to create ONE toothbrush bristle in Blender that behaves (simulates) like a real bristle. No particles ...
0
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1answer
38 views
How to make a particle simulation like this?
So here is the reference
https://www.instagram.com/p/CHijzp2gVt7/
I don't ask for like exact guideline how to make it, but if you can throw me a few steps or tutorials for something specific as this. ...
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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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13 views
Blender 2.8 physics simulation with python
I want to simulate gravitational bodies, like planets orbiting each other and whatnot. Is there a way to do this in python or any other way? Thank you!
Specifically, what I want to do is for each ...
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24 views
How to attach an object to a cloth simulation
I created a rope and added a cloth simulation to it, it works as it should.
But now I need this rope to attach with another object. Let's say I have a ring and I inserted this rope into the hole of ...
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0answers
20 views
How do I rotate an object in an anti gravity simulation?
I am creating a shot where:
gravity is turned off
multiple objects are "floating" in space
a few objects collide with eachother
each object has it's own forcefield in order to propel it ...
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0answers
15 views
how to make a rigged model move a rigid body object
I have rigged arms in a scene and I have a ragdoll. and I want to animate the hand so it can slap the ragdoll around. but when I keyframe the hand to go to where the ragdoll is standing the ragdoll ...
3
votes
1answer
214 views
Spiral rotation falloff within a particles system
I am trying to model arrows arranged in spiral manner. The effect I want to achieve is similar to the one in the picture:
Essentially, I want to have the arrows rotate and tilt inwards in a radial ...
2
votes
1answer
44 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 ...
0
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1answer
23 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 &...
2
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1answer
37 views
Fluid: How to convert the simulation to a series of meshes?
Once you've baked your fluid simulation, you can apply the Fluid in the Modifier panel in order to get one mesh that you can edit etc...
But how can you get the whole series of meshes, i.e. one mesh ...
2
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0answers
30 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
52 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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1answer
27 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
21 views
Cold smoke simulation
I want to create a cold smoke simulation to make a ghost-like object. I want the smoke to be flowing downwards, similar to the one in this video: https://www.youtube.com/watch?v=d8V16BFxGNs&list=...
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2answers
34 views
Bugs with Animation of tank. Blender 2.83 stl
Well, I'm trying to do a tank like in this tutorial :https://youtu.be/q5fjslhomsI
1.There are often bugs with metric system. It just doesn't work properly that good!
C'mon I have to make stiffness ...
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1answer
23 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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0answers
26 views
blender 2.91 how to export vdb sequences
on blender 2.91, mesh to volume: OK and good
But after?
Is it possible to export the vdb sequence?
Thanks,
daniel
5
votes
1answer
207 views
I would like to simulate spiky ocean waves from an old animated cartoon
Recently I watched a German movie called KƤpt'n BlaubƤr: Der Film. I loved this movie as a child and when I re-watched it I was really impressed with the wave physics. They are unrealistic and over ...
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34 views
Why is my mantaflow liquid/fluid exploding?
I am making a liquid simulation with mantaflow in blender 2.82.
For some reason my liquid keeps exploding after sometime. I used different resolutions, lowered the inflow, expanded the domain to try ...
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0answers
14 views
Best way to export a fluid/water animation to be used for WebVR?
Pretty new to Blender. I'd like to create a water animation to be used on a WebVR site using the Aframe framework. All the tutorials I've come across only suggest using the physics fluid simulator to ...
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0answers
50 views
Blender Mantaflow: Meaning of Liquid Particle Colors
Can someone explain me the difference between the particle colors in mantaflow.
I have a simulation where some water is dripping down. The first part of the animation is going fine, until some green ...
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1answer
33 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 ...
0
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1answer
20 views
Is there a way to get the shrinkwrap constraint to move the target to the object rather than the reverse?
In the image below there's a cuboid that has a shrinkwrap constraint to a distorted cylinder. As I rotate the distorted cylinder in the x-axis, the cuboid moves up and down following the uneven ...
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17 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, ...
2
votes
1answer
78 views
EXR output units
I am using Cycles to render a scene and saving the output in linear format to an EXR file. If lamp units are Watts (or W/m2 for the sun), what are the units of the value of a given pixel?
Edit
To ...
2
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3answers
51 views
How to recreate the spaghettification process around blackhole in blender?
I have been using blender from about a year and working on Blender for 3d Scientific Animations. I am very much fascinated about how NASA and ESO create because of animations of Astronomy. Can they be ...
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0answers
18 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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2answers
30 views
Physics sim - Progressively destroy bridge
I'm attempting to destroy a bridge progressively and have cell fractured a mesh that is 80m long and then smashed through it with a cube (both are rigid bodies). All the cells in the fractured mesh ...
0
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1answer
26 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 ...
3
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2answers
820 views
How to let grow PingPong balls inside an invisible box?
Inspiration / Reference
So I came by this interesting example of ping pong balls from Alvaro Navarro, where the amount of spheres are growing inside an invisible box.
So I think he is using some kind ...
0
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1answer
39 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 ...
0
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1answer
31 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
10 views
Fluids repelling away when hitting moving effector
Using 2.9
After a few hours of playing with every fluid setting trying to figure out why the fluid just sprayed everywhere when it hit the effector, it obviously ended up being the last thing I ...
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0answers
14 views
Cannot see Smoke Domain in Viewport
So, I cannot see my smoke domain in the viewport or when the scene renders when I have the cache type set to 'modular'. The scene works well when the type is set to 'replay', but I am still confused ...
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0answers
12 views
Disable atmospheric drag in smoke simulator?
I know this is a stretch, but using the smoke simulator, I'd like to simulate a gas moving through a vacuum (space) which means that the gas should not be slowed down over time and should retain its ...
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0answers
6 views
How to reload ocean bake from the cache folder
I had baked an ocean and thought that it would stay baked while I worked on the other parts of my project. Last night I tried to save blender and close it but it froze and stopped responding but I ...
