Questions tagged [physics]

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

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Mantaflow Fluids Not Working

I have tried many times to create a simple Mantaflow fluid simulation in Blender 2.82, but it almost never works. There is one youtube tutorial that always works but whenever I do it on my own (...
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Smoke & Fluid not working Blender 2.82 [closed]

I added a plane, clicked on object, quick effects and neither smoke or liquid is working for me. When I press play in the animation timeline nothing is coming up. I tried changing some of the settings ...
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How to stop shaking at end of rigid body simulation?

I have a simulation in which a toilet seat and toilet back fall onto the body of the toilet. They come to a rest on the passive toilet body, but continue to shake around for a bit. Any way to make ...
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16 views

Particle flow speed

Working on animating a science experiment, want to do a simple particle flow animation inside a structure of different cross-sections. By fluid dynamics laws, (AV=constant AV1=AV2), i'm trying to make ...
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11 views

How To Adjust Beginning Of Cloth Physics

I have created a waving cloth effect for a flag. At frame #1, the cloth begins an initial collapse, before beginning the waving effect. I would like the flag to already be waving at frame #1, rather ...
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25 views

Blender 2.82 Mantaflow will not fill volume

Using Mantaflow with the new Blender 2.82 release. Trying to fill a 3 meter long tank with water, but the fluid sim only sloshes on the bottom of the tank without filling up, even after 800 frames @ ...
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58 views
+50

Physics not working as expected

I want to drop an element on a plane. Here you can see what happens: This is my blender file: https://easyupload.io/bh6k7d I load the object in my python script and set it as a rigid body: ...
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11 views

Can I Smoke after cloth simulation?

I have a plane that have the properties of cloth, when it collides with an object I want that after certain time it explodes like smoke. How can I do that? I'm very new to this area
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18 views

Mantaflow (Blender 2.82) - How can I add speckles attracted by gravity inside a liquid?

So the effect I'm trying to make is having a container filled with water, and inside the water itself there are small particles and speckles that float in the liquid itself but also are affected by ...
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2answers
44 views

Mantaflow fluid does not take the shape of a sphere (Blender 2.8)

I created a sphere and set it up as a container for Mantaflow Fluid. I created another sphere and set it up as an inflow object. No matter what I do and how I play with the values, I can't seem to get ...
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26 views

How would I model a paper straw wrapper and make it grow?

I am trying to make an animation that replicates this: https://www.abc.net.au/science/articles/2010/12/15/3093920.htm Dropping water onto a paper straw so it grows. I know how to make the water ...
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1answer
31 views

Cloth and smoke simulation not working

So I was creating a smoke sim (in 2.82) and had a cloth fall onto the smoke to act as an obstacle, so that it would collide with the smoke, however it did not. I have set the cloth to be an effector ...
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18 views

Is it possible to limit the volume of fluid ejected from a mesh? 2.82

I am working with some fluid simulations in 2.82 which I am planning to add to my scene. My goal is to create a fluid sim which looks like rain water flowing off a roof. So far I have a cylinder set ...
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Rubber gloves physics animation?

I was wondering if anyone might be able to assist me in figuring out how to animate a character putting on some rubber gloves. I essentially have a character and a pair of gloves. I've gotten the ...
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2k views

Why does my cloth simulation fall even though it shouldn't?

I followed the instructions in this video exactly, but still I get this result. Here are my ncolth settings The collision settings are set as default. Here is the result which is unsatisfactory.
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laser guided missle game engine [closed]

I'm trying to make a game based on a missile launcher, I have a rough idea of how I want this to work. So ive got an altered cube with 2 spheres that im treating like sensors. ive also got a plane ...
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17 views

Help with Mantaflow

I'm pretty new to blender so I'm not very experienced but for one of my scenes I want to make a leaky pipe. Since Mantaflow is so new I can't really find any help online, could you please help me or ...
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42 views

How to make a mesh move due to its own force field interacting with a movable or an immovable one?

With World Gravity turned OFF. Two spheres in the scene, both having their own force fields (set to charge), same magnitude, opposite signs, in order to attract and presumably meet/collide at the ...
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1answer
18 views

Problem applying rigid body physics to chain links generated with array modifier

So I want to build a quick chain with 50 links. However, when I create one link, duplicate it 50 times and then apply a modifier. The rigid body physics go super buggy. It seems that I can only get ...
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1answer
19 views

Does FLIP fluid support more then one domain in one scene?

I would like to be able to repeat the animation many times in one scene. Fluid and gas solutions How to bake multiple fluid simulations in one scene? don't seem to work here
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1answer
25 views

How can I make different particles follow many curves in same scene?

How can I use 8 curves having Force and Curve in physics panel? Notice that Curve Guide is 4 time slower than Force and Curve.
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1answer
43 views

Make softbodys squeeze through other objects?

I'm playing around with the blender softbody physics and am trying to recreate something like seen in this video (around 24 seconds). The sphere is squeezing through a torus-like shape. In blender, I ...
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28 views

How is hair made in production of Pixar-like animation

I was scrolling on Youtube when I came across behind the scenes of Pixar animated movie video. I was surprised that I saw hair as a mesh in viewport but later, it was rendered as hair particles. How ...
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1answer
115 views

How to twist a cloth?

I am starting to get pretty stressed and sad. This is for a mobile game I have accepted a project for and if can't solve this I might have to drop this project which will cost me a bit. So if you ...
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31 views

Cloth simulation bouces around when falling - does not settle

Thanks in advance! Version 2.82.6 I am trying to drop a bedspread on top of a bed. When I run the cloth sim, the bedspreads falls just a little then bounces/dances around and never reaches the ...
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Has anybody got the “new” Hairsimulation in [2.83] to work? The collision starts too far away from the head

Here I simulate a head (still a bit too big, but smaller dimensions make it even worse). Note that this question only applies to 2.83. This is how far I get, as you can see the "outer Thickness" is ...
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1answer
33 views

Simulating LCD display angle effect (duplicating millions of realistic pixels)

I need to realistically simulate the light field created by a tablet/mobile phone LCD display including the limited display angle (the rendered output of the scene will be used for training a computer ...
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19 views

Blender crashes when saving an . fbx to export to Unity

Hello i am trying to use the baked cell fracture physics in Unity Engine. When i baked the physics i am trying to save the file as .fbx but blender starts not to responding and then i have to close it....
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25 views

how can I make and animate projectiles with strings attached to them?

I want to create an animation for taser darts firing but I can't quite figure out how to create the wires attached to the darts. I've tried using cloth and soft bodies on both paths and mesh edges ...
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1answer
974 views

Physics simulation won't run until the last frame of the timeline [duplicate]

I am making a rigid body physics simulation. It started out ending at 250 frames, but I later changed it to 400 frames. The problem occurs when the whole animation stops at the 251st frame. Is there ...
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27 views

How to have rigged skirt not go through rigged character?

Thank you for taking the time to check out my question. I've been struggling with having a rigged skirt not go through a rigged character to the point where I don't know what I'm doing or looking for ...
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26 views

Blender - Vector Field Animation

I am trying to create an animation of a vector field for my university Physics project. I ideally would like to create something like this https://www.youtube.com/watch?v=gcQuqxYU-UY so with moving ...
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Why is blender physics bake slowing down after a couple of bakes?

When I'd do the first bake on my project the bake would literally go zip... done, but after a few bakes the bake time would go to a few minutes instead, and without adjustments.. Does the program ...
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21 views

What metric unit does the force field use?

What unit does the blender physics 'Force Field' use, e.g: The 'Strength' in 'Force' ? I'm using the metric(The answer doesn't have to include only metric) preset.
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1answer
80 views

Unpinning Cloth Deforms Object

I have a plane for which I've enabled the cloth modifier. I have pinned the four corners of the plane to empty objects. I've animated the empty objects to move the plane down and collide with a sphere....
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20 views

Cannot render smoke in cycles

I have the scene all setup and I can even see the smoke in my viewport rendered view But when i finally tried to render the image, it just showed the original emitter of the smoke, but no smoke at ...
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19 views

Connect cloth object with rigid body

Im trying to simulate a fabric which bonds 2 rigid bodies. I want the cloth to keep the rigid bodies "connected" but i need the cloth to be affected (namely to be stretched) by the rigid bodies as ...
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18 views

Using “Rigid Body” for rolling ball. Flat surface. How to push the ball to roll? [duplicate]

Think of billiards. With some force, a ball can roll on a flat surface. When I had asked a question about calculating rotation for a rolling ball, someone wrote an answer that I should use Rigid Body. ...
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32 views

physics for a bag animation

I have an animation project in which someone drops stuff in the trunk of a car. Among these objects that are being dropped, are bags (sport bag, hand bag, backpack). So far, I used an empty as parent ...
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91 views

Mantaflow fluid bake at high quality?

I have been using Blender's fluid physics for a while now, and I have been wondering if it is actually possible to do a fluid bake at 1024 quality. What would this look like, and how could I achieve ...
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1answer
87 views

Blender linked Rigid body constrains for fractures

The Rigid body bullet constraints was a good add-on to quickly set up inter object constrains for fractures or so. It works and still is for 2.7x but there's no way to do in 2.8x as I didn't consider ...
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24 views

Can Ridged Bodies from Blender animation remain after animation loops in Unity?

I have created a keyframe animation in Blender for a pistol firing. The shell cases eject and at the apex of their ejection, a ridged body is applied that uses the trajectory to finish off the motion. ...
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16 views

Physics Simulation. How to set current frame to first frame? [duplicate]

I need to do a simulation of bottles stacked in a bin in blender, as shown here. After 114 frames, I get the result I want, but I want to define this state as frame 1, how do I set it?
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2answers
31 views

How do I set a plane to not fall?

I've been trying to set up a physics simulation so I can drop an Ico mesh on top of a plane and then collide they collide. However, I can't get the plane to stay in place, it just starts falling down ...
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how to assign different physics to different particle systems?

I'm trying to set up 2 different particle systems in my animation, one with "wind" blowing the particle system upward, one with a different particle system making a light streak. The wind blowing the ...
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1answer
32 views

Jittery physics trying to get a tube to roll in 2.8

I've subdivided and extruded, then copied, rotated and joined the base shape to create a grooved frame. The center of mass is the center of the frame. I've then added a cylinder to sit inside the ...
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1answer
57 views

(Blender 2.8) Smoke not showing in Physics Properties

The smoke physics is missing and I don't know how can I fix that. Thanks for helping me ! Here's the screen of the physics properties.
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12 views

Glitchy Rigid Body Physics

When I move my object around it seems like the rigid body physics breaks their boundaries. Hi, I'm trying to go for a puppet style animation, similar to this video: https://vimeo.com/88599080 but ...
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10 views

How transform the emitted particles of a animation into a mesh? [duplicate]

I'm trying to save an specific frame of an animation of emitted particles: But I can't save all those balls as an object. It only saves the emitter. I is there a way to transform all these particles ...
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23 views

Issue with soft body physics - balloon string

I'm trying to implement what this answer is suggesting: softbody simulation, attached to another soft body, copy location constraint, I've followed those instructions. I need it to be a particle as ...

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