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Questions tagged [physics]

Questions pertaining to Blender's internal physics or the Game Engine physics.

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1 answer
8 views

Rigging a medal that swings along a ring

I am trying to rig this medal that is attached to a ring, which is attached to a ribbon. What i am trying to achieve is have the medal swing and move around when the body moves, as a real medal would ...
0 votes
1 answer
4k views

Is it possible to do Cloth/Hair Physics with bones?

I may be on completely the wrong track here, but I'm making a character. They have thick cartoon hair and a dress. If I weight paint the dress to the basic rig, it will not look great. If I have to ...
1 vote
1 answer
667 views

Rendered soft body physics animation doesn't match viewport

Using blender 2.82a, I'm stuck in this situation: my soft body physics animation is right in the viewport, but when I render the whole animation the result is not the expected one and it seems not ...
2 votes
1 answer
1k views

Fluid Simulator: odd behaviour. Cache problem?

First of all: I am new to Blender. I installed it today. After a few basic things I wanted to try out the fluid simulator. The first simulation worked fine, just like in that tutorial. The simplest of ...
0 votes
2 answers
893 views

Modify Boid collision distance with hard boundary - v2.80

Hello hello Blender community! This is the first question I'm posting, similar ones have been asked before but I was unable to get something working from the answers/comments on the questions most ...
1 vote
1 answer
49 views

How to fix weird cloth physics behaviour? (Armature + Cloth simulation)

I'm struggling to figure out why my dress glitches out when I move a hip bone. What happens is that after a hip moves, it bends in a weird way as if it had some weight painting but it doesn't. The way ...
0 votes
1 answer
474 views

Can you put Multiple physics simulations in one scene simultaneously?

Trying to add multiple smoke simulations running at the same time in 2.8. but only one will render at a time
-1 votes
1 answer
542 views

How to set the physics property of imported mesh in Blender

everyone, I am trying to add rigid body properties to a mesh model in Blender. There are a lot of tutorials available on how to set rigid body property of the Blender built-in mesh models such as cube....
0 votes
0 answers
14 views

Hair & Particles shooting in one direction until frame 100?

I'm adding some fur to an insect and sometimes the fur spazzes out and points directly in the +X direction. After some experimenting I found that frame 100 it returns to normal. This is even true with ...
0 votes
0 answers
21 views

I want to propel a chair sideways, hitting the wall and landing on the floor like how we see in horror movies using body physics [closed]

I want to propel a chair sideways hitting the wall and landing on the floor like how we see in horror movies using body physics.
0 votes
0 answers
22 views

How to create milk splash with Flip Fluids? [closed]

This is the result of splash that i want. How to setup the settings, field forces, collisions, particles, to get splash like this - with particles and large "explosion"?
1 vote
0 answers
441 views

Fluid simulation - Where are the slip options for domain boundary and collision effectors in Blender 2.82 and above?

I'm sure I've seen these options before, but I really can't find the settings for the slip type in Blender's UI - at least not in 2.82. I found them in the documentation for 2.80: https://docs.blender....
2 votes
2 answers
2k views

Cloth repels and glitches through object

So, as I referenced in an earlier question, I made a character with hair made of cloth. I try and animate this hair, and I have managed to pin it in place, and make it look right, but when I start the ...
1 vote
0 answers
22 views

Liquid Sim in a Closed Container Not Working

I'm trying to simulate an oil drum getting knocked over and liquid spilling out of it. Right now, my sim is not behaving as intended. When I move the sim out of the hollow drum model, it behaves as ...
0 votes
1 answer
20 views

Driving an Objects animation from a Physics Simulation on another Object

I am a Blender beginner but very familiar with 3d workflow with a background in After Effects. I have a very high poly/face count mesh Ball that I am trying to animate using simple physics simulation ...
2 votes
2 answers
85 views

Objects get stuck in each other

I was trying to do a simulation of money falling on the floor, and the problem is that as soon as it touches the floor, some of it gets stuck in each other I used Collision for the floor and Cloth ...
2 votes
1 answer
934 views

How to change a force field's strength by triggers when animating?

How I can automatically change force field strength by triggers? I working on animation where a car (rigid body) moves on the track. I need increase speed on few places (like speed zones in games). ...
0 votes
1 answer
39 views

Raised ridges with shirt mesh

I'm in the game making industry and I have been working on a skin for a character.The raised sewing always happens for some reason and originally, I had found an answer to this problem in the physics ...
1 vote
1 answer
29 views

i want deform this metal strip by using this bending machine

I want deform this metal strip by using this bending machine. Which physics should I use soft body ? rigid body ? and what is method to use related physics? I applied rigid body and soft body physics ...
37 votes
3 answers
10k views

Is there a way to prevent soft body balloons from crumpling when they hit walls?

In the last homework project for my Blender class, I had to make a balloon bounce across a ceiling as a soft body driven by wind. I fiddled with the constraints but it always crumpled on impact with ...
0 votes
0 answers
52 views

Boob physics does not work when rigged

Warning: this post is basically NSFW. I'm new to Blender. I'm trying to simulate jiggle physics on a rigged character, but the clothing simulation isn't properly interacting with the rig. I have ...
3 votes
2 answers
2k views

Make a rotations-only parent BGE

There is a way to make an object parented to another object, but only for the rotations, not for the location. If i move the parent, the child may dont move. If i rotate the parent, the child must ...
0 votes
1 answer
388 views

Game Engine - Steering Behaviour Understanding

I am working on a BGE Horror Game right now and I want the enemy to follow the player around, but not directly. I want it to also walk around radon parts of the map even when the player is not there. ...
0 votes
1 answer
353 views

Animate cloth squishing breast with physics

I have a character with breast physics made with cloth simulation and some clothes (made also with simulation) but I'm trying to add an squish effect to the interaction of the breast and the clothes, ...
0 votes
0 answers
15 views

Simulation Not Working after Cloth Modifier Added

I have attempted to create several projects with a cloth modifier in Blender 4.0. After I have applied the Cloth Modifier, the simulation does not work and instead only shows the mesh as it would ...
0 votes
1 answer
263 views

Smoke trail Effect particles not showing up in image render

I have created a particle system but when I try to render an image none of the particles show up. Only the plane used as emitter is rendered. The particle circles show in 3d camera view but not when ...
0 votes
1 answer
750 views

Is it possible to add spring bones on 2 different armatures?

I have an animation with 2 models, which means that they have 2 different armatures. I wanna use spring bones for hair, and breast physics. But it seems like when I stop the interactive mode so that ...
0 votes
0 answers
25 views

Cloth keeps sliding off of rigged character

Honestly I dont know what to do now, am trying to make clothing for my rigged character but for some reason the cloth keeps sliding to the X axis for no reason, now at first I just thought its a left ...
0 votes
2 answers
340 views

Recording soft body deformations during simulation in bge

I have either simple or complex soft body object, collision plane and run simulation in bge(recording is turned on). What i get is recorded animation containing transformations only. Mesh deforms ...
0 votes
1 answer
3k views

When sculpting cloth nothing happens, object turns dark

I'm new to Blender and I'm following Blender Guru's tutorial on YouTube (https://www.youtube.com/watch?v=HlrgFS8AMMU at about 11:59). So far everything has worked according to plan. First I added a ...
3 votes
1 answer
226 views

How to make a sphere from many small spheres

I'm trying to make this (picture found on internet): So I added 2 spheres. One big and one small. For the big one I added : Particules > Emitter > Render > object > I selected the small ...
0 votes
0 answers
21 views

How do I get hair particles to lay flat on an object?

I'm trying to create a procedural material for a sort of fibre based particle board, but I don't have the physical object so I need to create a material for it from scratch. The picture below (side ...
1 vote
1 answer
640 views

particles flying far away from the emitter

I am following Ian Hubert's lazy moth tutorial (https://www.youtube.com/watch?v=imkSdlbXB_U). Everything was going well until the particle system part. My moths are just exploding and flying very far ...
1 vote
0 answers
18 views

Fix Particles not intersect with each other Non overlapping

I have to create a scene with some particles, but I encounter difficulties... The particles are intersecting each other. I have attached here the .blend file: https://drive.google.com/file/d/...
0 votes
1 answer
332 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 ...
0 votes
2 answers
2k views

How do I stop softbody from bouncing up and down

So basically, as i apply a softbody to any object, it goes up and down repeatedly. I get that this is by default and it happens every time when the softbody has its default settings, but I'd like the ...
0 votes
1 answer
1k views

Cannot run simulation for smoke and fluid

I've been trying to render smoke and fluid simulations, but can't manage to get the results I'm seeking. The first problem is that the smoke and fluid don't simulate. The second problem is that the ...
2 votes
2 answers
410 views

How do I freeze a frame of a Mantaflow Smoke sim?

I have a 75 frame smoke sim (Mantaflow- made in 2.82 release version) , with noise baked on it- all good so far. Now- how do I freeze, say frame 75 and have the same smoke, static, for as long as I ...
-1 votes
0 answers
33 views

Lifting a bulk weight with crane hook

I would like to know the physics, Dynamics of slings and links connected to crane hook. I can attach all as single object and move with pivot. But it looks like all fixed and no motion. So I'm trying ...
0 votes
1 answer
396 views

Activate objects that are hit - Blender Fracture Modifier Build

I am trying to do a cgi door break effect, and I am having trouble with the collision. I am using the blender fracture modifier build and have so far been able to break the door. I am using a set up ...
0 votes
1 answer
389 views

Combining soft body with deform modifiers (scale, armature, morphs...)

I'm trying to make an effect like a balloon, but on a blob like creature. I'm looking for a way to combine soft body physics with keyframing the scale of an object, since full strength physics disable ...
0 votes
1 answer
779 views

Animating a bomb that explodes at a certain keyframe after cell fracture

Okay, so I'm trying to create a bomb using cell fracture. I've got it fractured and set as an active object in physics. I've set the animation to have it flying through the air which is all good. I'...
1 vote
0 answers
22 views

Simulation of water in a bottle

how do I do a simulation of water in a bottle. So that it turns over there relative to the position of the bottle. Thanks)
0 votes
1 answer
491 views

Why are my soft body objects doing this?[Blender 2.8]

so basiccally, I want to recreate some things I made in v2.79 and can't. Now when I attempt soft body physics they always end up like this. Here's the blend file if you need it: The image and file ...
0 votes
0 answers
20 views

What's the easiest way to contract and expand folded patterns? [duplicate]

I'm trying to create a folding paper thing like shown in this video https://bramfritz.nl/wp-content/uploads/2024/05/paravent_base_grid_1-1.mp4 It goes from being somewhat flat, to scrunched up into a ...
1 vote
1 answer
37 views

cloth physics clipping?

I have been working on physics for a skirt for a number of hours but I keep encountering the same issue seen in the video attached https://imgur.com/a/Ra8p26F I have object collision to 20 and self ...
0 votes
1 answer
2k views

Rigid body objects not interacting with animated deforming mesh

I am new to using physics simulations in Blender, and I am having trouble setting up a rigid body physics with an armature deformed mesh in the scene. Basically, I have an animated mesh of a fridge ...
1 vote
1 answer
38 views

How to make an imported extruded round shape into a flexible wire?

how can I add flexibility to various existing bent round wiring shapes so that I could animate the connecting of the wires between LED fixtures? I have an electrical assembly of LED light fixtures ...
1 vote
1 answer
460 views

I have a Mesh with an Armature. The Mesh has a "Mesh Deform" modifier, which itself has physics. Why does it break when Rendered?

I am probably missing something very obvious---maybe a modifier stack problem, more likely it's a parenting issue, or else I don't understand Mesh Deform well enough. This is a simplified example. ...
0 votes
0 answers
30 views

How do I make two objects deform correctly?

I am making a detailed 3D model of a Shed and I want to animate it assembling. I have two identical sheets of iron that need to be overlapped. I have animated them coming together and they clip (as ...

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