Questions tagged [physics]

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

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17 views

How to create a physically based rope in blender? [duplicate]

How could one create a rope that can be controlled from both ends, and which drops down when left alone (using one object as a base to hang from and the other object as a weight on its end) ? I'm ...
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22 views

Fluid simulation not working (3.0)

I played with every setting for hours, and the domain just wouldn't form the liquid. I tried changing the cache location (and every other cache setting) and even opening a new file and doing ...
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20 views

Blender Molecular Script not working

I have recently been working with Manaflow's liquid physics and saw a youtube video on the molecular script. I downloaded the 2.8 version of the script, and installed it into blender, but in the 'n' ...
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1answer
240 views

How to achieve fountain looking falloff of spheres

I am making lottery wheel with balls in it. I want to make animation looking like water fountain - so, from the bottom of wheel it pushes them to middle of wheel, then they fall a bit do the right or ...
3
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1answer
146 views

Realistic Friction in Blender Rigid Bodies

I'm trying to do a simple rigid body simulation with a ball rolling down a slope. It works properly, however, I want the friction to be realistic. If I set the friction too low, the ball simply slides ...
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5answers
56 views

How can you procedurally generate objects with physics in the same area?

I have a truck and thousands of coins to pile on top of the truck bed. I basically have the coins stacked in rows and columns. However, I noticed that the higher the coin drops, the harder the ...
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1answer
18 views

How to make cloth simulation not to fall inside the floor? [closed]

So I made a cloth simulation, it should fall on the floor, but it falls inside of it. I set the floor as Rigid Body Passive, but it`s still not working, what am I missing?
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18 views

Clothes physics simulation to bones, by making the bones following the clothes vertex

I want "cloth physics" on my rig, so it can be imported to the game engine and ready to be used. The problem is the process is too tiring for me, anyone can help me find an easier way to ...
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11 views

Simulation of rigid bodies [closed]

I'm using blender 3.0 where i was trying to do a rigid body simulation . Rigid body simulations have usually worked instantly for me however when i was doing it today , instead of simulating the ...
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1answer
11 views

Make Unweighted Clothing follow Rig in Pose Mode

I have a character modeled and rigged with clothing, and I want to maker her sit in pose mode. The vest is weight painted so that the part of the vest around the shoulders and upper back follows the ...
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1answer
21 views

Cloth Simulation folllowing a certain path?

I want to animate a falling leaf that follows a particular path. I want to control the trajectory instead of letting it fly around randomly. Is there a way to achieve this?
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0answers
20 views

How do i simulate an object on a string, with the string being simulated, and can collide with something else?

I want to simulate the string being attached to one stationary point and attached to a bigger object, which can collide with other objects? I've tried so many different methods but I still can't find ...
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0answers
19 views

How to create standing water with a Mantaflow fluid sim?

I've been trying to work with smaller-scale Mantaflow simulations. In this case, I have a small amount of water dripping from a pipe/faucet, and I want it to form a puddle on the plane under the pipe. ...
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0answers
10 views

Fluid Simulation preview remains static?

I'm trying to make my object melt with Quick Liquid but if i open it in my current project and play it the simulation remains static and doesnt flow, it remains just like in the screenshot below. If i ...
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2answers
19 views

Hanging balance with pivot not working, parts falling through each other

This has got to be simple, I'm doing something wrong and overlooking the obvious. I have a beam with a pivot, a support post, and a weight at the end (also on a pivot). The pivots are cylinders, the ...
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1answer
13 views

Blender - Rigid body - Mesh - Not rotating/tumble after collision

As you can see in the video I want the slug object to tumble just like the cube does on the left. Both object have the exact same properties regarding ridig body, which is shape:mesh and the rest ...
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0answers
18 views

How to simulate a rolled/folded/bunched up window curtain dropping down?

Goal I am trying to simulate the effect of a window curtain dropping down from a bunched/rolled/folded up position. There are three ways a curtain can held up. It can be rolled up, folded up, or just ...
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1answer
27 views

Make Ball bounce around in a cube infinitely

I am trying to make a soft body ball bounce infinitely off of all the walls within a cube. Unfortunately I have not had any success with this. Everything loses momentum and stops, even with all ...
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0answers
27 views

How can I join five collision planes into a single concave box mesh?

I'm trying to make a custom collision mesh to wrap a concave static mesh in Unreal 4, but I found that once I join all the individual planes making up the 'wrapping' they form an invisible closure ...
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0answers
7 views

Why can't I rename my Caches? I

I have a cloth physics system and a hair particle system on one object in my scene. I am trying to rename my caches for those, "Cloth" for the cloth one, and "Hair" for the hair ...
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0answers
11 views

How to implement car/ rigid body physics

I am creating a car chase scene in blender. I want to implement car physics in it (for example: if the road is bumpy the car movement should also be bumpy (I don't want it to stick it to ground), if ...
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0answers
24 views

Cell Fracture Deactivation not working

I'm currently animating a simple sequence of a character jumping through glass. I followed a tutorial using the cell fracture for the glass, but when I enable Deactivation and Start Deactivated for ...
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0answers
11 views

Copy Rotation Bone Constraint not working on more than one bone

So I’m trying to copy the rotation from some cubes on to some chains of bones. The cubes I’m using have physics on them. The end goal is to have the bones copy the rotation of the cubes as the ...
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0answers
15 views

Hurricane: Smoke Simulation too rough and unnatural

I am trying to create a hurricane with a smoke simulation following a particle system. However, the Hurricane looks less detailed, it's blurry and also the particles in the reference image are much ...
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0answers
37 views

How to simulate water balloons in a bag?

I checked to blender cloth pressure documentation, I checked other questions on this website and also YT videos. I'm trying to get a bag filled with water balloons. The two water balloons are ...
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1answer
20 views

Fill Letter with Smoke - Smoke does not move

I want to fill a letter with smoke. The letter is the effector (Physics/Fluids) and inside the letter there is a cube as emitter (Quick Smoke). The letter has flipped normals so the smoke should stay ...
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0answers
24 views

How to pick up a cloth simulation

I've recently watched Disney's Encanto, and I am in love with the clothing design. I've been doing some experiments in blender, and something that I just can not figure out is how to pick up a cloth ...
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0answers
12 views

Mantaflow Several flow source, one domain

I have several flow sources but one domain. I need liquid to flow out all 5 sources. I have set up the flow inflow settings on the flow sources. When I bake it, fluid only comes out of one source. ...
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0answers
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Will a baked animation be consistent over many animations?

That is to say, if I crash and restart my PNG render from file 137, will my frame 136 and 137 be smooth, even if I have complex physics and turbulence set up? Right now I am troubleshooting a bug with ...
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0answers
18 views

Changing shape/size of force fields

I rather try to explain what I want to achieve. The cubes (later smaller objects) on the conveyor belt are supposed to be affected by the nozzles at the end and be separated depending on their weight ...
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1answer
18 views

Why/how are Physics/Cloth mesh deformations linked when an object is copy and paste into new scene?

If I create a Plane Object with a Cloth Modifer and let it fall on a Sphere Object with a Collison modifier, the plane falls and deforms around the Sphere Object as expected when I press Play. If I ...
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0answers
22 views

Make Soft Body more rigid in one direction

I want to make a soft body simulation that is very stretchy along Y and Z axis, but almost doesn't deform along the X axis - doesn't bend when pushed or doesn't squish. Think of a tube or a ring that ...
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1answer
23 views

Smoke simulation not visible

I'm trying to build a Hurricane using 3 smoke-emitting objects. One circle on the top and one circle on the bottom. Both objects have a particle system the smoke should follow. And there is one smoke-...
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1answer
27 views

How to make Juddery Simulation of Falling Leaves smooth?

I am using a particle system and a force field to simulate falling leaves. The leaves are falling from the sky and are supposed to stay on the ground. I encounter two problems here: The falling ...
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0answers
20 views

How to predict fluid baking time?

Given the system environment (cpu, ram) and the .blend file, how could the baking time for a fluid domain be predicted?
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0answers
29 views

I need help adding a chain with physics to an animated/rigged model

I had a 3d model that is animated, however, I now want to add some hanging chains with physics to the animation. I had the chain with rigid body, however, I cannot seem to attach it to the belt and ...
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1answer
41 views

cloth sim refuses to respond to any and all collision objects

Here is the blend file: https://drive.google.com/file/d/1EvQ3yYtWmFcM7evke1OW3uL0aInsn0rM/view?usp=sharing I have tried everything, everything to stop my cloth sim wire from clipping through this ...
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1answer
35 views

Physical link between some vertices of a cloth object and a soft body object

I was wondering if there is a way to pin some vertices of a cloth object to a soft body object with a sort of physical link with a fixed-length. To be more specific, I would like to use a cloth object ...
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1answer
28 views

Smoke Simulation Appears in Solid View, But Not in Renders

I can't get my smoke simulation to appear in renders. It does appear in the viewport in solid view. Why won't this smoke simulation appear in the renders? This is the render on frame 766: This is the ...
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1answer
69 views

Why is this cloth crumpling itself up?

It's been a while since I last did cloth simulation, and I can't remember how to get it right for the life of me. When I start the animation, the clothing clips through the body and crumples itself up....
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0answers
23 views

Adding physics property to mesh doesn't do anything?

I have an existing animation via "how to use blender" tutorial from Blender Guru (Donut 3.0). I'm trying to now go beyond and do my own thing but I can't seem to figure out why I can't get ...
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1answer
82 views

how to make a clay-like physic simulation?

I'm trying to make a clay pressed by a rotating glass(like pic 1), I've tried soft body but it looks like a rubber ball(pic 2). Is there someway to simulate the clay-like texture? what i want my ...
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1answer
53 views

Pole bending simulation

I'm quite new to Blender and I'm currently struggling to find a good way to simulate pole bending with physics. The goal is to bend a mesh cylinder like a fishing rod or a fiber-glass tent pole would ...
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0answers
25 views

How to make whiskers interact with the ground?

I'm trying to make Cometo's whiskers interact with the ground. I couldn't find any good videos on what I'm trying to do, so I came here. Cometo has long whiskers that I want them to drag on the ground ...
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1answer
111 views

How to prevent camera from clipping through floor? (UPBGE)

I have added a camera with a spherical empty to my model to view all angles, but the problem is that when I look up (during gameplay), the camera ends up below the floor (due to parenting), hence ...
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0answers
12 views

Boids jump or teleport to collision object along Z axis

I'm using a particle system with Boid physics and metaballs to simulate magma rising in the Earth's interior. I want my metaballs to collide and accumulate below the upper plane, so I solidified and ...
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1answer
37 views

problem with physics simulation

first of all thank you all for all the effort that everyone make answering questions and solving other people problems :) I'm quite new in blender, I've started using it during the summer, following ...
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1answer
40 views

How did I set up this particle system?

Using Blender 2.93. A while ago, I made a paper mache dancer inspired by the Major Lazer Light it Up music video. I'm trying to refamiliarize myself with how I set this up and I can't figure it out ...
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0answers
14 views

Dynamic Paint waves not working

I have a subdivided plane, I have a sphere, I have dynamic paint physics enabled on the plane the type is canvas and surface type is waves. I have dynamic paint physics enabled on the sphere with the ...
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1answer
24 views

Restrict collisions to certain objects in Blender 3.0 (collision groups)?

How can I restrict the collision modifier on an object so that it only interacts with certain objects? I see in older versions of Blender this was possible with collision groups/masks, but I can't ...

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