15 votes
Accepted

How do you make a cluster of cubes explode?

Add Active Rigid Body Physics to your cubes. (I created the cubes with 3 array modifiers applied, then separated By Loose Parts, and finally moved the origins to the geometry.) Add a force field in ...
  • 48.1k
15 votes
Accepted

Pulling a net tight

Cloth Sewings springs I would add a sewing edge to each corner of the surface and set its ending point to a pinning group. From the linked page of the manual: ...Sewing springs are virtual ...
  • 24.2k
11 votes
Accepted

How can a force be applied not to the center of a rigid body object, but to one specific vertex of the object?

Simulations which include moments of inertia (https://en.wikipedia.org/wiki/Moment_of_inertia) and off-center forces can be created by combining objects though rigid-constraints, and applying forces ...
  • 5,044
11 votes
Accepted

wind / pressure inside a volume?

Simulating actual airflow and pressure would require complicated fluid dynamics simulation - but you could simulate the effect using Soft Body physics. Create you mesh and add Soft Body in the ...
  • 42.5k
9 votes
Accepted

Cycles smoke not responding to wind

Wind Falloff The force field in the scene is being affected by a high dampening due to the simulation of gravity introduced by the Falloff settings you are using. The wind is now acting as if it was ...
  • 24.2k
8 votes

Are curve physics possible?

Physics and simulations generally only affect mesh or particle objects, you often have to convert your curves to a mesh. If you are using the builtin Blender tree generator Sapling Addon it even has ...
8 votes
Accepted

How to make a force field concentrate only on a specified area?

You can set the Effector Group to limit the force fields which can affect a given particle system: Add an empty (or really anything that's not a force field) With the empty selected, create a group (&...
  • 153k
8 votes
Accepted

Force fields affecting selected rigid body objects

This appears to be similar to the behavior described. In this scene, the wood and metal cubes are affected by gravity, but only the metal cubes are attracted to the red cylinder. In Blender 2.76, ...
  • 5,044
8 votes

Blender 2.8: Restrict influence of Force Field to its Collection

I hope it's not too late for this answer, I just found out how to do it. In the properties of your particle system, at the Field Weights tab, there's an option named Effector Collection, select the ...
7 votes

Seamless looping animation

Things like fire etc. I loop in post-production, turns out to be the easiest way and fastest. Just render a bigger chunk of the animation, split it in half and switch the halves. The ends are now ...
7 votes
Accepted

Particle system - steers along path

First make the arrow point in X direction by editing the mesh: Then enable Rotation tab for particle system and check Dynamic: Your particles will now rotate along the Curve guide accordingly:
7 votes

How to simulate magnetism In Blender?

The only possible way as of 2.77a is to write your own engine for magnetism in python. The hint how to do that as an addon is here: Create custom physics for an object with python Explanation why it ...
7 votes
Accepted

What are common causes for Blend files growing in size?

In each instance the cause of growing file size may be different. Common causes include: Groups of objectsCause: Objects in a group might not exist in any scene.Solution: Check groups in the ...
  • 45.1k
7 votes
Accepted

How does the Turbulence Force Field work?

A force field is a vector field, meaning at every point in space it defines a vector based on some vector-valued function. In the case of a force field, the vectors represent forces pushing the ...
  • 24.5k
7 votes
Accepted

What does seed control in force fields?

More detail can be found here. The seed input determines the noise pattern of the force. This makes the force uneven and more realistic, especially useful for wind simulations, but also when dealing ...
  • 877
7 votes

What does seed control in force fields?

Various data that is generated for things like simulations will use random numbers to get their results. In reality, we don't get true random numbers, we get pseudorandom numbers, which is a ...
  • 54k
7 votes
Accepted

How to create tentacles moving with the wind?

You can achieve this by using a Soft Body Lattice to automatically deform your mesh and react to the physics. The advantage of this over making the whole mesh a Soft Body is that each tendril can be ...
  • 42.5k
7 votes

How can I make string tighten around a soft object

I just tried out this, and it worked "ok": I just created a cylinder with soft body and some subdivisions. I created a torus as rigid body -> animated. Then i just animated the scale of ...
  • 40.9k
6 votes

"Time remap" or slow speed of cloth particles driven by a force

Final: Overview: This is pretty easy solution surprisingly. Only thing you need to do is keyframing Cloth > Speed > Multiplier value. Slow down speed is exaggerated in this example just to be ...
  • 17.1k
6 votes

Pulling a net tight

Pinning with Hooks Animated example: "Interactive" example: Overview: Select your corner vertices and put them to the Vertex Group, that you will use as a Pinning. Create as many Empties as pinned ...
  • 17.1k
6 votes
Accepted

How can I recreate this emitting/rigid body/force field animation?

You could create your pill, give it Rigid Body physics (Active), disable any gravity in the Scene Properties panel, enable the object's rigid body Animated option for several frames, animate a short ...
  • 114k
5 votes

Apply force to a specific point

You are looking for applyImpulse. applyImpulse(point, impulse, local=False) Applies an impulse to the game object. This will apply the specified impulse to the ...
5 votes
Accepted

Magnetic Spheres

I believe I found the path to start this sort of simulation/animation. I'm still working on it a bit. If you want to create an object that has the appeal of attractive and repulsive forces, it seems ...
5 votes

Simulating blocks jumping out of a box with Rigid Bodies

I think if you move an invisible plane with rigid body passive and animated checked you can control the force a bit more. Like this: even more boxes: You can reduce the wobbling by using shape "...
  • 40.9k
4 votes
Accepted

Mesh with cloth simulation and particle instance modifiers (used in a particle system) not responding to wind

The size of the leaves is too small that is what causing the leaves to not respond to the wind force to solve this : scale up all the objects involved in the simulation move the emitter further from ...
  • 19k
4 votes
Accepted

Mesh with cloth simulation not responding to wind

The mesh is actually responding to the wind, but it takes a value of 20k force to make it respond as desired. The flag has a much larger distance to be suspended by the force of the wind so it takes a ...
  • 18.8k
4 votes

Seamless looping animation

The original Blend file is no longer available so I've made some assumptions about the desired goal. Here's my result : This uses a similar technique as that described in Create Seamlessly Looping ...
  • 42.5k
4 votes
Accepted

Can I make a smoke emission only be affected by a specific force field?

You can specify a group of force fields which can affect the domain. So by putting each force field in a separate group (⎈ CtrlG), you can have them influence some domains but not others:
  • 153k
4 votes

Wind force field not working

I had a similar problem, and my flag started to react to the wind force once I scaled it up 10 times. The bigger the flag was (in Blender Units) the more it reacted to the wind force. Check your ...
  • 1,149
4 votes
Accepted

What does the force field flow setting do?

The manual says Flow Convert effector force into air flow velocity. A quick test shows that it slows down the movement of particles but does not attract or repell them: So my interpretation is ...
  • 37.8k

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