Questions tagged [physics]

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

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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 ...
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1answer
31 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 ...
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1answer
16 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, ...
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1answer
45 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 ...
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1answer
521 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?
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1answer
51 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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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 ...
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15 views

Aligning the meshes of two scanned fragments of a 16th centruy wooden altar piece for glue joint analysis

I am working with photogrammetric 3D models in the restoration of wooden cultural heritage. I use the digital 3D models to analyse the gluing surfaces of two fragments of a wooden altar piece from the ...
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1answer
76 views

how I can make the mesh invisible and keep the fire?

how I can make the mesh invisible and keep the fire ?
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30 views

Physics properties: Will the render be accurate without baking?

I have a scene with lots of objects with physics on them. Dynamic paint, rigid bodies, wind, and turbulence. Now, getting all of this baked and packed in a .zip to send to a render farm is quite the ...
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1answer
133 views

How can I make an object emit a single particle with predefined frequency

I have no actual blend file for this, as I have not managed to make it work, but in essence I would like something along the lines of a tap that drips water every 1/2 sec or so. Is this at all ...
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25 views

Physics are causing my objects to float without specific paths

So I turned on rigid body physics and cannot for the life of me figure out why my objects are just floating around now. I didn't have this problem at the start of this scene. My gravity is still ...
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28 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
48 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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2answers
102 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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12 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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1answer
54 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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70 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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13 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
33 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
19 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'...
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1answer
65 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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26 views

Trying to Make Zero-G Manipulatable Liquid

I’m 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
34 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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41 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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26 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 ...
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1answer
71 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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20 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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40 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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1answer
84 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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18 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 ...
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1answer
235 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 ...
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1answer
73 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 ...
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1answer
42 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 &...
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1answer
347 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 ...
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0answers
34 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
65 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
47 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
34 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
37 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
141 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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101 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
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1answer
211 views

I would like to simulate spiky ocean waves from an old animated cartoon

Recently I watched a German movie called Käpt'n Blaubär: 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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63 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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15 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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118 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
56 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 ...
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1answer
31 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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39 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, ...

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