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Questions tagged [physics]

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

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1answer
57 views

Can this be done by physics in Blender?

I saw this and I'm trying to figure it out how can I make this by physics features. I tested some different ways, but since I'm not advanced in this feature of the blender, I want to ask you if it's ...
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0answers
9 views

Hair dynamics to normal map

I was wondering if this is possible in Blender. I want to animate a dog with hair dynamics enabled so that it looks realistic, but my laptop can't handle it. Is there a way to bake a normal map of the ...
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0answers
13 views

hair dynamics making my particles system float in air

whenever i check the hair dynamics box it make my grass particle system fly around the scene. ive tried replicating this in other blender files with hair dynamics checked and it works just fine. not ...
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0answers
20 views

Problem with simple motion with constant acceleration

I find problems in the Blender physics engine even in simulating simple fall of a sphere. I probably have done some setup wrong because i've also tried bullet engine stand-alone and it works better. ...
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0answers
21 views

physics-based tank rig - interaction problems between OBJECT constraints and rigid-body physics

(I would attach my blend file, but I can't figure out how to attach non-image files (and haven't found any documentation on how); if someone needs it, just explain how in a comment and I can edit the ...
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0answers
18 views

Physics problem - the objects pass through the wall

How to fix this physics problem? The objects pass through the jar wall... I want to remain in the jar. https://drive.google.com/open?id=1Tj8ZReUG8lLU5dHCbrnWqC3nAjpVQxW3 at second 5 No answer..., ...
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0answers
11 views

Why is my physixs simulation whacky?

My physics simulation won't properly simulate. I've tried changing collisions, checking if anything is touching, making sure its all big. If you know any fix I'll be happy to hear it Edit: I kinda ...
0
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1answer
24 views

Particles disappear when no physics set

So I created a forest scene using hair particles system for trees and bushes. These particles stay stationary and only the camera and my character moves in the animation. So to better the render time, ...
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0answers
36 views

Smoke and fire not showing up in my eevee render

In my render the fire with smoke physics are not rendering for some reason, I've been breaking my head about this. I use blender 2.8 and the Eevee renderer. I'll have a download link to my file. ...
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0answers
42 views

How to add “Sag” to cloth simulation?

I am trying to create the net of a soccer goal using blender's cloth simulator. Right now the net looks really rigid and unrealistic. The cloth is a plane with subdivision and a wireframe modifier. I ...
2
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1answer
19 views

How would I save my objects as-is in the middle of a rigid body simulation

I want to save my objects in place as a movable editable entity. I have been searching the internet for an answer, but I have failed to find one. I have this broken wall, that I used rigid body to ...
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0answers
16 views

How to speedup Soft Body simulations in Blender?

Is there a way to speedup Soft Body simulation in blender like in cinema 4d: https://www.youtube.com/watch?v=CykigKQwadU I have a high-poly object and I can not animate it with soft body dynamics. ...
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1answer
22 views

Physics simulation accuracy

I want to create an animation with a cup falling on a plate. I encounter this error: https://drive.google.com/open?id=1HWPJKGIEsMbaL5WniwBCojy_XnwbjaAa Here are my rigid body settings, for the cup ...
2
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0answers
28 views

Is it possible to realistically tie advanced knots with animation and physics in Blender? (I tried molecular script)

Initially, the task was looking pretty simple: Make a wooden sign tied with 2 ropes showily appearing on the screen and swinging on those noose knots. After 3 sec one of the knots come untied and sign ...
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0answers
48 views

Cloth - “Mesh Deform Cage” Rigged, The Mesh Expands when body moves

I have been in the past using "Object Constraint" to keep the "Mesh Deform Cage" to move with the body by using the "Copy Location" to a bone. In blender 2.80 It doesn't like this method so I am ...
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0answers
41 views

Enable Collision for multiple objects

Please note that the answers to other questions have not applied to this problem. I have a large number of shards created in the Fracture Modifier that I've converted to Objects. I want all of these ...
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0answers
13 views

ReBake a fluid Simulation?

Following problem: I have a fluid animation which works after being baked. Now I change some detail, the inflow velocity or the inflow type for example, but when I hit the bake button again the ...
0
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1answer
26 views

How do I make dynamic 3D-printable hair?

I am trying to make dynamic hair that can be 3D-printed. It needs to be physics-enabled (so some kind of particle system, maybe?) and, through some kind of transformation, needs to end up as a single "...
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0answers
25 views

Make a cloth influenced by fluid?

I´d like to have a mesh, which behaves like a cloth, cotton or so which is in front of a tube, in which I simulate water. Now when the water exits the tube, I want the cloth (which is pinned at two ...
0
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1answer
27 views

add clothing physics to a PART of mesh?

I'm trying to figure out how to add clothing physics to a portion of the mesh and keep it attached to the object. In the picture, I want to add physics to the highlighted faces and leave the rest of ...
3
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1answer
535 views

Is there a way to make a ball roll using rigid body physics?

I know you can do this in Blender Game, but is there anyway to have a ball rotate as if it were rolling in Blender Cycles?
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0answers
12 views

Is there a way to scatter objects using a hair particle, without the objects being inside each other?

Hi, I used hair particles to scatter objects around a plane, but as you can see in this image the objects are inside each other. Is there a way to fix this problem?
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0answers
15 views

Vertex by vertex wrap mesh onto another mesh

I have a character with breast. Task: Make the breast bounce using cloth physics. Solution: Create a copy of the breast by selecting, duplicating and detaching breast polygons to separate object. ...
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0answers
12 views

How to set speed of multiple motors all at once

I have a set of vehicles using the "motor" rigid body constraint to animate each wheel. works well. Is there any way to set the speed of all the motor constraints at once? (vs. having to edit each ...
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0answers
18 views

Object falling from scene

im new to the blender and i have some problem with the imported 3D model. I want to make a 3D animation of this 3D bottle rotating and the liquid inside would move. PROBLEM is that when i hit play -...
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0answers
23 views

Understanding the dynamics implementation (rigid, soft body and Force Fields)

i'm currenty studying the blender dynamics and physics implementation for research purpose, but i'm struggling to do so. I've already searched extensively in the documentation pages but still I haven'...
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0answers
23 views

Free bake - Rigid body physics

I am having a hard time understanding free bake in blender. I tried looking up detailed tutorials online and couldn't fine anything. I have a simple scene with active rigid bodies that interact with a ...
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0answers
16 views

Sphere Momentum and increase in velocity

I am observing (for me) a strange effect in physics engine of Blender. I set location and rotation of sphere(1) according to the following rules: Fame 0: Location -2*Radius*pi Frame 40 Location 0, ...
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0answers
14 views

Is it possible to make forces act on the objects surfaces instead of the object center?

I want to create an explosion where I need to give the planks some radial velocity based on the point force. The planks are just moving away from the force based on the center point of the mesh. Is ...
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0answers
18 views

It¡s possible to make mesh collide on another mesh without the “collision” physics?

I have made clothes for a character, i've already attached them to the armature and im able to move it, but the body mesh overlaps with the clothes mesh. I know that with a little of hard work, i can ...
2
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1answer
24 views

Problem with a simple physic simulation using python scripting

I am very new at blender and I want to make a simple simulation in blender. I used boolean operation to model the bowl-like shape. And I dropped the cube into the bowl. When I play the simulation via ...
1
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1answer
20 views

How do I make objects collide with text?

I'm a beginner in Blender, and I'm making an animation where an animated piece of text collides with balls in its path, causing them to roll. I was just wondering if there was some way to tackle this ...
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0answers
94 views

Blender 2.8 Smoke Sim Bug

Recently, I started using 2.8 for smoke simulation. Everything looks normal until I render it out. Though I can preview the smoke in the viewport(render mode), it does not appear in the final render(...
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0answers
18 views

Can linked objects with physics constraints interact with other objects?

(Newbie to list: 1st post. Hello everyone) Specific question: How to make linked objects with physics constraints interact with newly created objects. I am trying to use Blender2.8 to animate ...
0
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1answer
9 views

Limit bone animation velocity

I'm currently animating a robot arm. For this purpose, I created an armature with IK solver. I've constraint the bone (aka robot joint) transform to match the motion possible with the robot. However, ...
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0answers
39 views

Rigid Body Doesn't Interact

I'm creating a simulation of the 9/11 tragedy. However, the rigid body for both building and the plane don't seem to work at all. Plus, the plane itself is rotating every time I add rigid body to it. ...
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1answer
61 views

Simulating an egg on a conveyor belt getting smashed

I have a short animation of an egg shape (solid w/o liquid) and the egg is on a conveyor belt (follows directional movement of belt via driver) then was supposed to have the egg get smashed by a large ...
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0answers
24 views

Can we add dynamic hair particles to a softbody simulation?

I am modeling a winter Cap, The model looks like this I am trying to apply softbody physics to the fur ball on the top of the cap. The physics act properly on the ball but the hair particles don't ...
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0answers
19 views

how to soft deform multiple spheres into a base shape [duplicate]

i'm trying to recreate this effect: (Credits to Joey Camacho, https://shop.rawandrendered.com/collections/prints/products/in-formation ) I tired to use multiple soft body sheres falling into a cube, ...
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0answers
29 views

Cloth Simulation Rips my mesh

When I use the cloth simulation and try to make an animation with it, the mesh is ripped into many layers and pieces for some reason... Any idea why this is happening? Thanks Blend File:
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1answer
39 views

Legos falling into place and stacking up. Can someone point me in the right direction?

I am making an animation to be projected onto a wall at a theater. I need to make legos fall from the top of the screen and land stacking up to form a wall. After that I will have the Legos movie logo ...
1
vote
1answer
54 views

How to link two different physics objects together?

I am trying to make a winter hat model which has cloth simulation on it. The model : This is not the final model but this should give you the dea Is there any way to make the fur parts heavier than ...
0
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1answer
51 views

Create a Hanging Bucket Effect (Handle Hooked on Rod)

I'm trying to create a hanging bucket effect, where the handle hooks on a rod and when the bucket falls, the handle stays hooked. I've tried almost every combination of Active, Passive and Active (...
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1answer
45 views

BGE car game problem

I have model two car.the first car is okay but the second car is flying when I turn right or left. here is the blend file many thanks for any answers.
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3answers
55 views

How to convert physics animation to a curve/path?

Ok. I have a ball at the very top and a long curved tube leading down and I want to turn the ball's physics animation into a follow path animation. In order to do that I need to somehow make a path ...
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0answers
79 views

Stretch traffy around a corner

To learn more about Blender Physics, I've developed a scenario that encompasses what I want to be able to achieve. GOAL Something like rubbery taffy is stretched out from a post, around a sharp ...
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1answer
52 views

Fluid simulation leaking through obstacle

In this project, water is leaking from the walls of the waterwheel and it doesn't look realistic at all. I tried so many possibilities but nothing worked. please help me to make the water looks ...
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0answers
15 views

Fluid Obstacle while animated by modifier

I'm new to 3D animation, and was trying out Blender. I've come across an issue that I'm not sure how to fix. I wanted to try throwing fluid onto a subdivided plane, whose vertex's are being moved by ...
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0answers
82 views

How can I use physics connect functions in Blender 2.8?

I've been taking tutorials of Blender at the age of 2.79(we still live in this age basically), and I am pretty used to the physics tool bar functions in 2.79, you can create physical constraints ...
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0answers
10 views

How to have multiple objects use physics at different times within same animation?

So essentially I got a lot of different rock models and a scene where buildings fall throughout the entire animation. The only problem is I don't know how to set a time for when those rocks should ...