Questions tagged [force-fields]

Force fields can be used to add effect to many of Blender's physics systems (Such as wind to blow particles and cloth, turbulence to smoke, etc.)

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Smoke flow force field not working with Mantaflow Gas

I'm making a smoke simulation with Blender 2.82 and I'm trying to guide a particle system with a smoke flow field (like this video: https://www.youtube.com/watch?v=iddFzef4H6E). Both normal velocity ...
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35 views

How to make a mesh move due to its own force field interacting with a movable or an immovable one?

For some reason this appears to be difficult. There have been similar questions posed before. With World Gravity turned OFF. Let's say there are two spheres in the scene and both have their own ...
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24 views

How can I make different particles follow many curves in same scene?

How can I use 8 curves having Force and Curve in physics panel? Notice that Curve Guide is 4 time slower than Force and Curve.
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Softbody: disable forces

Is it possible to create a softbody, that reacts only to collisions, but not to any other forces like gravity, etc. I reduced already all Field Weights to zero, but without effect. For Information. ...
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22 views

How can I prevent force fields from affecting hair or other particles?

I want the turbulence force field to only affect my smoke sim, but it's also messing up my hair particles. I've tried setting Effector Collection to the collection the smoke simulation is in (the hair ...
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26 views

Blender - Vector Field Animation

I am trying to create an animation of a vector field for my university Physics project. I ideally would like to create something like this https://www.youtube.com/watch?v=gcQuqxYU-UY so with moving ...
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20 views

What metric unit does the force field use?

What unit does the blender physics 'Force Field' use, e.g: The 'Strength' in 'Force' ? I'm using the metric(The answer doesn't have to include only metric) preset.
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17 views

field force setting under particle settings

Although I can set up "wind", "vortex", etc. in "field force settings" under an emitter's "particle settings", I don't seem to be able to rotate the directions of the field force settings. The "wind" ...
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21 views

Force effecters with ocean modifier

I have an ocean scene I just started, and I want there to be wind in the scene. Here is a picture: The only problem is that I can't get the wind effector to interact with the ocean. Is there any good ...
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2answers
25 views

Initial animated particles on a force field path: How to control/hide?

I can hide the emitter easily and control the end where the particles "die out". Yet I'm also looking for a way to hide the initial portion of particles lumped up i front of the cue of a system with ...
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1answer
32 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 ...
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Constrain effect of force field to a collection for Rigid Bodies

Back in 2.79b the influence of a force field was constrained to it's layer. That allowed effects like in this .blend created in 2.79b. Two objects with rigid body enabled and two force fields. When ...
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24 views

Need Help With Settings for Hair Particle System \w dynamics enabled

Goal: Model of Solar System, I'm currently stuck on some animations I'd like to sketch up for the sun. Scene Setup: Currently, there is one main object (icosphere), the sun (in blender terms, it's ...
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16 views

Blender force field not obeying distance constraint

I'm looking to animate a series of objects confined to a sphere. The objects should all move in a clockwise direction, imagine fish swimming in a spherical fish bowl. I'm trying to achieve this ...
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1answer
22 views

Two Particles systems attracted to same force field

So I have a NurbsPath that I turned into a Force field for a particle system, but I am trying to add an additional particle system to the scene but it is always attracted to the Force Field. Is there ...
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Why would particles swirl in wind during design but not during rendering?

In a 14 second long animation, I have a particle system emitting objects from a logo, and a plane with force field physics as a wind source, moving during the animation so the particles swirl in ...
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1answer
251 views

Is it possible to create vector fields based on a math equation?

If creating a vector field based on an equation is not possible, how create an equation-free 3-D vector field in blender? The arrows should have color based on the magnitude of force they exert on ...
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9 views

How to do random rigid body motion with location constraints?

I want three objects (say 3 UV spheres) to move randomly in a plane. Saw some solution using force fields - force, turbulence, and vortex. But can't exactly figure out how.
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23 views

How to animate character with Curve Force Field Effector on Hair Particles

I have a character that uses a bezier curve to shape the hair particles via Curve Force Field. I got the idea from this short tutorial: https://youtu.be/vu6MQC6qdRY Now I am trying to animate my ...
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58 views

How to bend parts of mesh with a force field?

I'd like to make feathers on a tail of a model bend to the force fields. I've tried some tutorials but after spending whole day trying different methods, none of them worked propely. For example in ...
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25 views

Problem with Force field trying to make a pillow

I am having a small problem in creating a pillow, I followed about 4 to 5 videos and surprisingly nothing works. https://imgur.com/vPFWfwv I did get how to make it, but even tho I followed the same ...
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32 views

How to merge particles to new shape blender

I am looking to achieve an effect similar to the particles shown in this tutorial: https://www.youtube.com/watch?v=Q93pE5jB1Uw BUT When the particles are in mid-air - whilst being affected by the ...
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24 views

“Push” Smoke Vortex System Instead of “Pull”

How I might go about making a smoke system be pushed away from the origin as its source moves instead of being pulled in like the normal vortex force field would have it do? I’ve tried using the ...
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75 views

how to make a field of shakiness

Is there a way to make a 3d space of shakiness( or any kind of effect), that if an object passed by it or stay in it can be affected and when the object goes away of it that effect ends? Thanks, guys ...
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113 views

I don’t know why blender 2.8 keeps crashing when I do simple task

So I started doing this project, creating a tornado with particles and force fields and when I go to press play, or move the playhead it repeatedly crashes, and can’t get past this point. I don’t ...
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126 views

How do I limit particles to move only on certain axis?

I have a turbulence force field that moves some particles around, but I don't want the particles to move on the Y axis but only on the X or XZ axis. Is there any way to achieve it? I already tried ...
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44 views

How to make a fire beam that expands

I am making a fire simulation, but I wanted to make the fire expand somewhat uniformly within a certain angle like a beam. Maybe the way to do this would be with obstacles? But I don't want to lose ...
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1answer
118 views

How can I make scene with multiple gravities going in opposite directions without using a force field?

I'm making a scene with multiple gravities affecting different objects that can interact with each other (those gravities are going in two different directions so I can't just cheat by changing an ...
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1answer
416 views

Blender 2.8 curve guide forcefield and torus knot

I was just playing with blender 2.8 particle systems and I wanted to make my particles follow a curve. I created a torus knot path using the Torus Knots+ plugin but it doesn't seems to work. I managed ...
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1answer
98 views

Field Weights properties not working as expected

Very new to Blender, and I've just been following some tutorials to help me achieve my goal of creating a smoking logo. I've found plenty of helpful ones, but not quite everything has come together ...
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1answer
144 views

How do I get particles to follow an animated path or armature?

I'm doing this wormhole tutorial https://www.youtube.com/watch?v=K2WTH016rfk and I'm trying to get particles to also follow through the animated tunnel. Emitting from the far end and coming toward the ...
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33 views

blender smoke - high resolution behavior differences

I have created a complex smoke sim with many force fields, trying to achieve a certain behavior. With the main point being a tunnel being punched through it as it progresses. I can get great looking ...
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1answer
34 views

Random computer luggishness using Blender

I am following some littlwebhut tutorials and things are going OK, until my computer slows way down and won't do what the video tutorial is doing. I could not get it to apply a forcefield last night, ...
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92 views

How can i make to objects act like magnets so they push each other

I wanna make to object push each other and have the same effects as magnets
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57 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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1answer
51 views

What is the physical foundation of Force Fields?

I would like to know the physical foundation of the force fields in blender. For instance: what are "Wind", "force strength", "flow"?
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461 views

Wind force field not affecting cloth object

I already looked online, but couldn't find anything that worked. can someone take a look? Here is the file:
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873 views

Blender 2.8: Restrict influence of Force Field to its Collection

How do I restrict the influence of a Force Field to the Collection it's in? I'm trying to simulate falling leaves in Blender 2.8. I have a Collection with the Leafs_Emitter particle system and a ...
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1answer
159 views

Changing Physics of Waving Flag in Python

I have created a Blend file of a flag waving in the wind. This is done using a Wind Field and the Cloth physics attribute added to the flag mesh. The animation renders nicely in the Blender API using ...
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148 views

How to turn off force fields for rigid bodies?

How can I switch off a certain force field for only some of my dynamic rigid bodies in the scene without keyframing “Dynamic” and have the objects which were affected by force field still interact in ...
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271 views

How to enforce planetary gravity on fluids?

I'm trying to make a scene with a few small planets, but when I went to make a lake/river I couldn't find any options to have the fluid's gravity be relative to a point (aka the planet's center). I've ...
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206 views

How to make an interactive two-finger robot gripper and grab things with it?

I am trying to make a two-finger robot gripper. The grippers use soft body physics and my goal is to move them towards an object in the middle of the scene to just grab it by pressing the grippers to ...
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180 views

Making 3 points stick on a plane / flag with wind

I have a flag I want to waft in the wind. I imported the shape as an SVG from Adobe Illustrator. I converted the mesh to a curve. It wouldn't let me make some subdivisons but it still seems to work ...
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37 views

Create smoke like affect using hair particles

I'm trying to see if this effect can be achieved the same effect from the film mama(2013) the same way her hair moves in the film I tried experimenting with force field but I'm not really seeing the ...
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1answer
30 views

Scatter Particles after the have been created

How do I move Particles in random directions (explosion) after they have been created? I trace letters with a particle system without any movement. Once I have particles all around my edges I want ...
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39 views

Text animation help

I have created a text with a metallic material and converted each letter to a mesh and applied rigid body physics. Now, I want to make an animation where a plane (or maybe a magnet) flies over the ...
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1answer
491 views

Object particles fly up, move in the wrong direction

I'm new to Blender and I can't figure out why my particles move into the wrong direction. I made a plane with paper texture and cloth simulation, I use this object as the particle, my emitter is a ...
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144 views

Wind Force Field not working in my scene

I have tried everything in my scenes but the wind force field is not working can anyone help for my this file flag animation
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Pulling a net tight

I am trying to drape a net using the cloth physics, but then is there a good way to make it look like the four corners are pulled and "staked" in a certain place? My first thought was some kind of ...
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411 views

Wind force field won't affect cloth simulation

I am trying to use a wind force field to cause multiple cloth simulation objects to be blown away from their initial location, however when I play the simulation, the simulated cloth objects just fall ...