Questions tagged [physics]
Questions pertaining to Blender's internal physics or the Game Engine physics.
1,580
questions
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25 views
How to decrease the size of particle for fluid simulation(2.9)?
I'm following this YouTube tutorials and making fluid go through the pipe.
https://www.youtube.com/watch?v=3ChtnI8GNtM
When I make pipe very thin (e,g, 0.03m in diameter), then particle size of fluid ...
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11 views
Collision physics. Rotating object constantly hitting coffee beans in a grinder or roaster
I would like to make a collision with a spinning object in a coffee roaster/grinder and the coffe beans being roasted/grinded. I have tried with rigid body physics and collision physics, without any ...
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9 views
Change liquid density in flow simulation
is it possible - and if yes how - to change the density of the liquid in Blender? The viscosity can be changed, but if the liquid has also another density, e.g. liquid steel with about 7000 kg/m**3, ...
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16 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 ...
0
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1answer
41 views
Fluid simulation not working properly
basically i wanted to create a fluid simulation in which the liquid (soy sauce) pours out of a kikkoman bottle. I've already set up the domain, the flow emitter inside the bottle (tried to use both ...
1
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1answer
19 views
Where is Smoke in 2.83.10?
I am trying to create something that requires the Physics > Smoke and it's not shown on my physics panel. The version I'm using is 2.83.10 and I have included a screen shot of my physics panel and ...
2
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0answers
38 views
Animate a self-solving rubik's cube
I am trying make a cube scene in which the cube will interact with ground while solving itself. I'm giving link to a real video, in case you are wondering how the scene might look. https://youtu.be/...
5
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2answers
315 views
Blender Soft Body deforming too much
I am extremely new to blender, I am attempting to model some sandbag physics for a 3d printing project. I want the sandbags to have a nice look to them.
The video below shows the issue I am having.
I ...
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1answer
31 views
How to make wheat stalk stiffer in Cloth Physics?
I am making a wheat field that uses cloth physics to help each stalk move realistically with the wind. However before I convert the particle system, I need to look for the best numbers to plug into ...
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0answers
14 views
How to Copy a settings from a Cloth object to multiple Cloths objects (e.g. Physics Properties > Cloth > Object Collisions > Distance)
I have a scene with multiple cloths objects. I want to modify something in physics properties to all others objects (same settings for Object Collisions>Distance); Something similar with "Copy ...
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1answer
30 views
Cloth collisions with another cloth
I am trying to create a scene where a cloth will collide with another cloth;
The error is where the clothes are interacting and after that is going wrong....
I have attached here the blender project:
...
2
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0answers
23 views
Dynamically calculated center of mass
The center of mass changes for an organic object when it moves its body parts. Because Center of Mass is key thing with physically correct animation is how to get the center of mass dynamically?
Such ...
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0answers
13 views
How do I properly delay activation of an active rigid body physics property?
I have worked out the proper use of the Start Deactivated tab on the Rigid Body properties, and the ceiling pieces are acting as they should, being broken by the mesh coming down from above. Following ...
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0answers
17 views
How can we make an solid object being squashed by another, turning the first one into fluid?
everyone.
My issue is that I don't know how to make an object splatter another.
I have a text appearing on screen like so.
I have it recovered by a second text
in the same manner.
I would love for the ...
0
votes
2answers
88 views
Water simulation hangs over the surface of the collision object
I created a water particles but they seems to hang over the surface, why is this happening?
Still the water hangs over the ground even with Collision Surface Thickness zero:
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15 views
Is it possible to do cloth simulation with imported obj files?
The question might look dumb but I was wondering if it’s possible to do cloth simulation with a cloth mesh that I imported (for example, a dress in obj format) I already tried that but the dress is ...
7
votes
1answer
229 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 ...
0
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0answers
20 views
Animating Physics properties
It seems I'm still not doing things right for animating the physics properties. I have tried to Keyframe the "active" function on Rigid Body so that the object will begin its crumbling at ...
2
votes
0answers
19 views
How can I create a ceiling being broken?
Using Blender 2.91 -
I have already learned how to use the cell fracture add-on and how to break things up, but my lack of understanding is in how to keep a pre-broken section of ceiling from falling ...
0
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0answers
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. ...
4
votes
2answers
159 views
How to smooth out different interpolation types
I am trying to complete a blender animation where a ball rolls down a slope under the influence of gravity.
To simulate gravity I have calculated the time and distance the ball needs to travel to ...
0
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1answer
20 views
0
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0answers
14 views
Blender Crashing While Baking Multiple Particle Systems
I have a scene with quite a bit of complexity with 24 particle systems running in it and ranging from around 4000 - 23000 particles each.
Blender crashes while baking the dynamics. It stops responding ...
0
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1answer
18 views
Pausing a cloth simulation
I am making an animation where a default cube is launched from a tube and explodes. I have a particle system and an Explode modifier and a cloth system to simulate an explosion with cloth like ruins. ...
0
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0answers
7 views
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 ...
0
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0answers
8 views
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 ...
0
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0answers
24 views
Connecting keyframes and physics animation in one scene
I have a liquid physics animation. It animates from 1 to 100 frame.
GIF:
https://gfycat.com/ru/mixedweeharlequinbug
Parallel I want to animate cube with location keyframe. Scenerio is:
Cube starts at ...
1
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0answers
31 views
Soft Body rope extends infinitely— how to constrain?
I followed this tutorial to make a 'cord' that joins two objects in my scene (basically a path with two empties and a soft body modifier). I'm mostly happy with the collision but it seems to extend ...
0
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0answers
22 views
Can you make the Direction of Gravity dependend on the Rotation of an Object?
Ok so here is the Visual Example of what i mean:
The arrows show in which direction Gravity is pulling. So, is there anyway to do something like this ? Maybe that Gravity is depended on the Normal ...
0
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0answers
13 views
Quick Smoke doesn't work in Render
So no matter what I've tried until now (digging through developer forums, watching tutorials, etc.) doesn't fix my issue, where when rendering my animation in Cycles or Eevee neither the smoke nor the ...
1
vote
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 ...
0
votes
1answer
50 views
How to fix Cloth Simulation from this odd compression
The objective of this simulation was to just have the cloth hang down so part of the tent door is open and part is hidden behind the tarp.
Originally it was a simple plane, I have recently solidified ...
0
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0answers
58 views
Can't Find Color Mapping for Fluid Simulation in 2.9
I can't find the color mapping option for fluid sim in 2.9 where is it? I go to viewport display in my setting but can't seem to find it. Thanks in advance
3
votes
1answer
89 views
Help with smoke and liquid simulation in Mantaflow
Original Post
This is the problem that led me to post this.
Whenever I scale the domain of a smoke simulation, the inflow object's smoke also scales up/down. Applying the scale of the domain does not ...
0
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0answers
29 views
How to Make a Rigid Body Car in Blender
I am making a car with blender and I want the car to ride with rigid bodies.
I already have the wheels and they are all moving and reacting to slopes but now I want them to connect to the rest of the ...
0
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0answers
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 ...
0
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0answers
20 views
How can I correctly apply wind on grass (hair particles)?
I made a hair particle system of grass and wind and turbulence force fields. But the wind doesn't seem to affect the grass particles and the turbulence when translated, just resizes the grass rather ...
1
vote
1answer
49 views
Attaching a rope (curve or mesh) to two other objects [duplicate]
I've already read two threads on this but the instructions given are not clear enough for me.
i would like to attach the ends of the highlighted mesh, so that animating this part isnt so tedious.
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0answers
8 views
How are stiffness parameters in cloth objects are coverted into real-life cloth stiffness parameters?
Everyone. I am doing an experiment where I want to know how to convert stiffness parameters in Blender into real-life cloth stiffness parameters.
I have searched online and found that stiffness ...
0
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0answers
12 views
Ocean Modified mesh has disappeared upon reopening file
I have two oceans that are both no longer visible, both created from the start cube (one was duplicated).
They aren't visible in the viewport or any renders even with the visibility icons toggled on.
...
0
votes
1answer
33 views
why is my rigid body object not falling correctly?
I have a model of a cup that I want to fall on the ground. The issue is that once it hits the ground it doesn't rotate or anything so only the rim of the cup is making contact with my passive object. ...
0
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0answers
13 views
How can one create Physical based Impact deformation?
So my goal is simple. This: https://youtu.be/f7F5tef1ACE?t=34
Creating a ricochet is all to easy. Just some rig Body stuff. But dont know of a way to make the Mesh Deform with according to the Impact....
0
votes
1answer
35 views
Best approach for a random terrain rolling ball animation?
Simple question, just looking to be pointed in the right direction as I am somewhat new to things.
I'm creating an animation where a ball shaped robot (think BB8) has to roll around various terrains ...
0
votes
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 ...
0
votes
1answer
26 views
3 problems achieving a 10:00 minute countdown clock animation. (non-repeating seconds, changing 100 units to units of 60, minutes not following math)
I'm working on creating a COUNTDOWN ANIMATION of ten minutes 10:00 to 0:00 using the Animation Nodes Add On.
I can't find as yet a way to repeat the seconds portion so every 60 seconds so it recycles ...
0
votes
1answer
9 views
Liquids flows to weird direction. (It flows toward one area of the domain object)
I'm doing some assignment with Blender to use physics simulation, and I found my fluids are flowing to a weird direction. The fluid was supposed to flow downward, because that is how it usually works, ...
1
vote
1answer
33 views
Cloth Physics Clipping
I'm trying to make a shirt to go on my model. However when adding cloth physics, for half of the model the shirt collides into the model for a small amount of time before clipping through.
I created ...
12
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1answer
492 views
How to make rope wrapping around spheres?
I am looking to make tiki lamps like this:
but I don't know how to make rope that wraps around a sphere. Can anyone tell me if there is a tutorial on how I can make rope wrap like this?
1
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1answer
49 views
Theory of calculating randomness for damping factor
I am referring, as an example, to Blender's particle collision system, where you can set the randomness for particle damping between 0.0 and 1.0. My question now is: how does it exactly work? Yes, ...
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0answers
24 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 ...
