Questions tagged [physics]

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

Filter by
Sorted by
Tagged with
0
votes
0answers
17 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 ...
0
votes
0answers
38 views

Fluid bake at 1024 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 ...
0
votes
0answers
16 views
+50

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 ...
0
votes
0answers
22 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. ...
2
votes
0answers
15 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?
0
votes
2answers
25 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 ...
1
vote
0answers
14 views

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 ...
0
votes
1answer
29 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 ...
0
votes
0answers
13 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.
0
votes
0answers
11 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 ...
0
votes
0answers
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 ...
0
votes
0answers
19 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 ...
0
votes
0answers
20 views

Tricky Cloth Simulation with Cut

I try to create a cloth simulation where at some point the cloth is cut along the edges. I am in 2.83 where there is a Weld Modifier now which just applies the "Merge by Distance" operation on the ...
0
votes
0answers
17 views

Softbody flying through air & deforming (without colliding)

This is my first post. I'm making a simple animation (letter acting jiggly/wobbly, while flying through the air). You can see the result I want inside my old flash game here (intro, letters flying ...
0
votes
0answers
16 views

I made a chain that has rigid body but the chain disconnects

This picture tells everything. They were supposed to be linked and they actually are but somehow magically disconnects through the mesh. It seems that it occurs when it happens when enough force is ...
1
vote
0answers
35 views

How would you make a Diving Board?

I would like to bend an object by hitting it with another object but I don't want the first object to just fling about after getting hit. I would like to know how to "pin" and object, say a long board,...
0
votes
0answers
19 views

Rigid body physics based pulley in blender?

Hi I want to make a simple physics based pulley with two rigid body objects, so that when the heavier object moves (via physics) it pulls the other object over the pulley. I don't need the 'rope' ...
0
votes
1answer
55 views

Fire simulation not working in eevee 2.81

I'm trying to make a fire simulation for an animation I'm making, but when I bake the simulation I get a strange result. It works completely fine in cycles,but I want to use eevee because it's a lot ...
0
votes
0answers
9 views

Point Constraints Breaking When I Append Them

I made a simple ragdoll using point constraints but when I try to append it from my main library file to another file, none of the joints work and the ragdoll just falls apart. This is the ragdoll in ...
0
votes
0answers
23 views

How to add I more wrinkles in my cloth simulation? While having it behave and face where there is tension?

blender noob here. I’m practicing with blender right now and I’m trying to make a cloth simulation where it gets blown in the wind. I noticed when doing the animation, it lacks the detail(wrinkles) ...
4
votes
1answer
70 views

Documentation on the mathematical models used by Blender physics engines

I need to know which mathematical models Blender uses during rigid body simulation and fluid simulation (e.g. Lattice Boltzmann). Is there something like that in the Blender manual or do I need to ...
0
votes
1answer
30 views

Physics object with force field render oddly shaped and jagged

This question still puzzles me: When f-12-rendering (both Cycles and Eevee) frames with a cloth animation the banner-object behind the airplane appears oddly shaped and utterly jagged. Please inspect ...
1
vote
1answer
35 views

Physics: Liquid Splashes too much

I have a problem with physics. I am trying to make a spoon removing a fluid in a cauldron. The problem is when I introduce the spoon into the liquid the liquid splashes a lot. I tried changing a lot ...
1
vote
1answer
40 views

Animated cloth simulation parenting troubles

I have parented both banner (with a simulation), airplane and camera, but cannot make them travel in sync. The flag/banner is making me troubles: The objects appear connected when moved in 3d-view, ...
1
vote
1answer
62 views

Problem with Fluids Tespassing Obstacles (bottles, cauldrons)

I have problems with physics. I modeled a bottle and I duplicated part of the bottle for the liquid. The liquid has a face on top so it is closed. The bottle is open on top. I added a cube for the ...
1
vote
1answer
25 views

Understanding rigid body physics

I'm following this great tutorial https://www.youtube.com/watch?v=1gM8yEMFMjg to learn how to fill a mesh with a particle system but am having trouble replicating the simulation (at 6 min 50 sec if ...
1
vote
0answers
16 views

Switch from rigged character to ragdoll

I am planning an animation in which I have one or more rigged robots following some Motion Capture (MoCap) data simultaneously. Once they have finished following the MoCap sequence, I want them to ...
0
votes
0answers
20 views

Armature physics

I'm trying to add physics to this armature so that it will be able to swing when it is moved. Does anyone know of any tutorials or solutions? (Images are to demonstrate how the mesh is supposed to ...
-4
votes
1answer
178 views

Rigid Body, object passing through floor

So typical rigid body simulation problem, object is passing through the floor. I am trying to set leaves to rigid bodies so when the character steps on them or pushes them they react. I have the ...
1
vote
0answers
19 views

Hair Sticking Simulation

I have a hair particle system. I would like the hairs to be attracted to a nearby mesh based on its proximity, not unlike how human hair reacts to a statically charged balloon. This would be ...
0
votes
0answers
16 views

Blender 2.81 - How can an Active mesh interact with a Passive mesh without the Active mesh bouncing away from the Passive mesh?

For example, I modelled this picture frame. A bolt is used to hang the picture no problem. But when I apply the "Active" physics to the frame and the "Passive" physics to the bolt, the frame just ...
0
votes
0answers
20 views

Rotating liquid

Having a sphere of liquid, no gravity, animated to be rotating, I would have expected the sphere to turn disc shaped. But it does not, is just keeping shape till eventually parts are ripping off. ...
1
vote
0answers
10 views

Smoke jet simulation? [duplicate]

I would like to animate a jet of smoke as in this video clip (from the movie Interstellar). Here's a short preview: Note the important elements are: The smoke is translucent The smoke is very fast ...
0
votes
1answer
31 views

Dynamic paint Displace not rendering

I have been trying for the past couple of hours to render an animation with dynamic paint displace, but while it works in the viewport, it does not show up in the render. These are a few things I have ...
0
votes
0answers
12 views

Pretension a generic spring before a physics simulation

I am looking to simulate a device I am trying to 3d print before printing it to make sure everything fits together and works right. I need springs that are always under tension in order to simulate ...
0
votes
1answer
29 views

Why do my particles disappear when changing their physics to 'None'?

I've got a problem with particles: Particles flying around When I change the physics settings to 'none', particles immediately disappear: When the physics are set to 'Newtonian' particles are flying ...
0
votes
0answers
14 views

Why do the origins of Explosion particles change when I render the image?

When I look at the Explosion particles in the view port they are exactly where I want them (Top picture), however when I render the image the origins of the particles seem to change as in the lower ...
0
votes
1answer
8 views

cloth breaks away from armature as soon as first frame of bake begins

I am trying to animate with auto rig pro with cloth physics baking on my character. However, whenever i leave off and enter into the first frame of the bake, the cloth that has the physics simulation ...
0
votes
0answers
16 views

Blender software architecture/algorithm technical documentation?

I love Blender and am curious to learn about the behind-the-scenes software architecture and algorithms used in this big piece of software. I know that there is plenty of Blender user documentation, ...
2
votes
0answers
29 views

Is it possible to do rigid body sims with periodic border conditions?

is there any native way or quick hack to get Blenders rigid body sim to use periodic border conditions, meaning that an object that leaves the domain to the left enters back in to the right, if it ...
1
vote
0answers
13 views

Setting up emitter to text and morphing to another text?

I am wanting to emit particles to form a text and then for the text to morph into another text, and to do it in Blender 2.81. Are there any experts out there with the know how to accomplish this. I am ...
0
votes
0answers
15 views

Particle system that forms a Text in Blender 2.81

I want to make a particle system rain down particles that form a text on the ground of my scene. How would you do this in Blender 2.81 ? There are many tutorials using old versions of blender but I ...
0
votes
0answers
16 views

Render single image perfect but rendered animation has objects dissappearing

I have finished a 650 frame animation. When I render a single image as PNG image the render is perfect. However when I render the whole animation as PNG eequence, the images making up the section ...
0
votes
0answers
11 views

How to detect when objects in a scene are stationary?

I wanted to do something like this: simulate the stack box scenario, determine that the simulation is stable, and record the position and pose of the box. Here's how I think about it: there is a ...
1
vote
1answer
55 views

Adding multiple Physics constraints to a single object at different points (ie: 4 corners)

I would like to attach multiple physics basic spring constraints to a single plane, or any object, but it seems that they only attach to the origin of the object. Is there a way to attach it to a ...
0
votes
0answers
15 views

How can you change the center of gravity while keeping the center of origin as is?

How can you change the center of gravity while keeping the center of origin as is? This question is different to the previous version by another user.
0
votes
0answers
11 views

How to stop ridgid body object floating around?

I have atached a link to the problematic blend file. https://www.dropbox.com/s/vaxriy8lfo1palg/robotHat2-animated_ridgid%20body-copy%20float%20hat.blend?dl=0 At about frame 300 it appears that the hat ...
0
votes
1answer
42 views

How can I make objects fall at steady speed?

I have two objects (same size, same geometry) falling from different heights; obviously the object in the higher position speed up and has a different behavior when hitting the ground, compared to the ...
1
vote
1answer
37 views

Why is my rigid body object floating as if there is no gravity?

I have two issues on my current file that I cant seem to solve (see link below)? 1) why is the hat being thrown appearing like it is floating and not affected by gravity towards the end of the ...
1
vote
1answer
155 views

smoke comes out in bursts from moving object

I am making a firework with a fuse to look like a S, and when i bake the flame, it is OK at first while the firework is not moving very fast, but when the firework speeds up, the flame comes out in ...