Questions tagged [physics]
Questions pertaining to Blender's internal physics or the Game Engine physics.
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How to make softbody interact with an animated rigid body
I am trying to make a scene where a softbody cube falls into a long spinning rectangular rigid mesh, but it turns out that both doesn't interact with each other as the cube just falls through and ...
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How can I make this launch better?
I tried to launch this pawn away with some rigid body physics, but it just slides off and doesn't look very convincing in terms of speed and the overall movement. I like the way the square flips up ...
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Blender cloth sinking into basket
I'm trying to model a low poly picnic basket, and I want to put a cloth into it like this (so the cloth goes into the middle):
When I use default cloth settings I get this:
what settings/techniques ...
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How to use cloth sim for flat surface?
I'm trying to put a picnic blanket sort of thing onto a flat surface. When I do this, the cloth doesn't crumple or move (I'm guessing because there is nothing to bend it?, but I want to get a more ...
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Fluid Simulation - fluid quantity
I am working with Fluid Simulation, and I am struggling with some of the settings. I read through the manual on blender.org but I haven't found a solution for this.
I am trying to add fluid in a "...
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How do you give physics to an object after an animation?
I'm new to blender. So I was trying to make a simple animation of a cube with physics on it, then I decided to animate the cube to go up in the air and release it to do physics stuff. So the question ...
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Rigid body not rotating when bouncing off another rigid body and keeps bouncing off the floor forever
So, I am making an animation where a cat is dancing and I want a rigidbody (roll of paper) to fall in the background, but whenever I run the animation, the paper falls and then doesn't rotate, and ...
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Stretch cloth to a limit then tear
I was wondering if there is a way to make cloth stretch to an extent and then tear. For example: have cobwebs(cloth) sticking between an object and wall then, the object starts moving so the cobwebs ...
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Best solution for particle collision simulation
Hello everybody,
I am working on recreating the model you can see in the picture. The model is wearing a "helmet" cover in leaves. Although the 3d model will not be moving, I want the leaves ...
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Fluid simulation into keyframes?
I'm trying to play fluid simulation in reverse in a dope sheet. I've baked the simulation cache, but the option to bake it into key frames does not exist, it does only for rigid body simulations. I've ...
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Cloth sim shirt gets stuck and unstable on characters under arms
My cloth sim shirt keeps getting stuck under my character's arm pit like this:
https://imgur.com/QF51yjT
Since the cloth is constantly stuck there it won't settle and the shirt won't stop vibrating. ...
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Is my soft body mesh flawed for soft body physics?
I want the "Pachi Shell" to behave like a semi-rigid plushi. I've spent several hours tweaking stiffness, push/pull, self collision, etc, but I can't get the results I want before it the ...
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How do I prevent my smoke simulation from getting smaller with more resolution divisions?
Whenever I increase the resolution divisions, the smoke always becomes smaller. I want more resolution without shrinking its size.
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How come my cloth simulation is clipping with itself when using armature despite having self collisions enabled?
I am trying to create baggy clothes and using Cloth Simulation, but seem to be having a problem with self collisions. Despite having enabled Self Collisions for my shirt simulation, the shirt still ...
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How to make a chain look like it's hanging naturally?
I made a single chainlink then used an Array Modifier to duplicate with object offset linked to rotated "plain axes" object to rotate alternating links. I made a single link to be the anchor ...
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Need help with complex hair collisions
I´m working on a short film that involves a character who at one point puts a mask on (not a full head mask, it covers just his face), and no matter what I try his hair goes through the mask when he ...
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Why does my cloth shirt sim inflate
I have this shirt:
which should just fall onto my character when I hit play. But instead it inflates like this:
I have all collisions and self collisions set to the minimum but it doesnt seem to ...
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Tanks suspension physics
I am modeling a tank in blender with the aim to use it in unreal engine later (first project ever in blender). I am currently trying to apply the physics to my suspension. I have added an active rigid ...
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Soft body object not falling
I have been working on a project for uni for a while now, I made a scene with a couple objects and some textures. It's going to be a ball falling from stairs, bouncing on collision. I made the ball a ...
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Is it possible to affect a cloth simulation with fluid simulation?
I am trying to simulate fluid on top of baked cloth simulation. It is even possible?
I have got a baked cloth sim with a FLIP Fluid physics sets to obstacle and a sphere set as fluid that drops on top ...
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Softbody to only deform on collision?
I have a softbody which should bounce and deform when hit, so I give it some weight painting at the points which should deform the most.
The problem is that, the softbody will deform a little ...
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How do I make the physics more natural?
Don't ask why but this is a cube shaped egg. The egg is cracking and something is popping out. No matter how I play with the mass, force and deleting bakes and rebaking, it doesn't change what it's ...
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Animated collision not colliding with soft body
I have a soft body object and a collision object, both are animated.
When the collision object collides with the softbody during the animation, nothing happens.
However, if I remove the animation from ...
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How to automate the orientation process for a 3D Model such that it has maximum alignment with Global Z axis?
I have a scan of a banana-like object. For the time being, let's assume I'm importing the STL file of a 3D-scanned Banana, which is bulbous on one side (is heavier on that side).
It gets imported into ...
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Rigid body does not work with my pulley animation
I have been working on a pulley animation and I want all of the meshes not to go through each other. I have enabled cloth physics for the rope.
Even though I have enabled the rigid body physics, the ...
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Limit rotation of rigidbody?
I've been working on a drumset and I'm facing some trouble with the cymbals as I want them to move dynamically if hit. I tried setting them up as active rigidbodies and the joists as passive ...
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How To Bake Particles Into Mesh w/ Keyframes?
I have a particle emitter that drops a single particle, which is manipulated by forces. I've got it working perfectly, however, it is too fast and I want to slow it down. But I don't want to slow ...
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How To Freeze Frame On A Falling Leaf (Dynamics & Forces)?
I want to create a shot where a fallen leaf ends up in front of the camera, freezes there for a few seconds, and then resumes its fall.
I'm trying to do this with physics and forces, but I can't get ...
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Blender to Unity (collisions)
I'm wondering how to import objects into Unity without it colliding as a block with the car. Hoping to make a racetrack that is interactable in Unreal Engine 5. Is this possible or am I short on ...
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Why Won't Rigid Body Spin In Vortex?
I'm at a loss here. My Vortex force will only affect the translation of this object, but not the spin. What am I missing?
PROJECT FILE
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Cloth object (flag) starts to dissolve during render
I have a flag like this:
But after rendering the animation, it starts to dissolve and moves weirdly around, and ends up looking like this:
I suspected RAM issues during render, however, I didn't have ...
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How can I set a specific linear velocity in the x-y direction for a sphere using Python?
I am trying to set a specific linear velocity for a sphere in the x-y direction using Python in Blender. I have already assigned various properties to the sphere using the bpy library, such as ...
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Rigid body on edited plane not working
I have a cube on simple plane. I applied rigid body on both objects active and passive. Everything is working fine . But now if i edit plane and extrude one of the edge and now play animation, then ...
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Geometry nodes: calculate the cross sectional area of a moving object
I'm trying to model the drag force (Fd) on flying objects. I would like to make the model procedural, so in which I now choose to use points, on which I later can instance.
The drag force formula is:
...
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Plane falls not on collision surface
I follow through my first Blender lesson and have a problem. Tissue falls as if current point of view is collision surface, not table.
I did set up Collison property on table and saucer and also set ...
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Fluid particles keep flowing back on curve Force field
My goal is to have fluid particles pour into a cup and disappear inside. I kept experimenting with multiple settings but the closest solution gave me the result shown below.
The main issue is those ...
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Plastic Ocean avoid IOR distortion, but keep the look
I am recreating a model of the ocean in a stylized way.
I am satisfied with the " ocean " look, but I need to place Wind Turbines, and, as expected, I get distortions proper to the IOR ...
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How can I make light particles (like feathers) explode then fall down slowly?
i'm trying to make an animation where a characters head appears suddently in a pile of hay.
The straw particles should almost explode on the top of the pile, then gently fall down.
I've tested using ...
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Some hair particles are stiff with dynamics
so I'm currently trying to work on hair dynamics for my rig and I keep running into this problem but don't know how to fix it. I have my rig bending to the left to see how the hair falls and most of ...
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Particle system different than render
I am using cycles to render out a cold sparks clip for NYE. I have rendered out one clip and it will pass as usable but i want to make it look more realistic. So, I added about 25000 particles, I ...
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Rotation to rigid body objects
I can't really find much about this and most of answers I do find are rather outdated.
Is there any way to get rigid bodies to rotate by a force?
For example I would like the cubes in this "...
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Error activating the Molecular addon in Blender 3.0
I just started doing the particle exercises and for that, I need to use the Molecular addon. I use Blender 3.0. I downloaded the addon and installed it. The problem appears when I want it to activate ...
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How can I apply the 'unit scale' of my scene to get it back to 1
I recently had to change the unit scale of my scene after I realized everything was off scale (started the project from an imported interior scene at the wrong scale) and it had a repercussion on some ...
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How do I extract a mesh from just one frame of a physics simulation?
If I simulate 50 boxes falling onto a plane using physics rigid body, how do I get a mesh from just one of those frames? I want all 50 boxes as they have landed, joined together as 1 object that I can ...
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Move vertices while maintaining face size?
Imagine you have a model for a bag of chips, but the bag is flat. Let’s say you fill the bag with chips, so to model this, you’d want to adjust and pull out points on the bag. Is there a way to move ...
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My rigid body simulation was working fine until yesterday, and it now will not bake at all
For the last four months I've been making an animated movie as a school project. In one scene I had a bunch of transistors move out of the way of something that was falling using a rigid body sim, but ...
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How do I copy a keyframe for settings across multiple objects?
I can change the physics properties of all the objects in my scene at the same time, by selecting them all then hitting ALT when I make changes in the Physics properties. Or I can copy the values of ...
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Why can't I stop these objects from falling down?
I have two sets of objects that I want to fall apart at different times. I used the "cell fracture" addon to divide them up. The FIGHT set works great. I set all the parts to "...
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Cannot stop intersection on money as particle system
I'm making a simulation of a load of money flowing and piling up.
I have a plane that they're sat on and another plane they're running into on the left, both with high friction to stop them and make ...
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Cannot get physics to work properly, everything goes mental
The pivot is set to rigid body passive. The see-saw is set to rigid body active.
The block is placed on the end of the see-saw and is set to rigid body active. I used the snapping to faces to place ...
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