Search found 8 matches
- 29 Mar 2021, 13:24
- Forum: General questions
- Topic: Collision object disappear
- Replies: 1
- Views: 1016
Collision object disappear
Hi, I found an object disappear problem when running simulation, it is as the video shows XhKtDZRRRqM if not reachable, here is the link i have tested several times, the disappearing often occurs a period of time after they first collide. According to a previous topic , i checked mass varies from 1e...
- 29 Mar 2021, 12:32
- Forum: General questions
- Topic: Collision force too big
- Replies: 5
- Views: 1314
Re: Collision force too big
Hi coppelia, thanks for your reply, always bring me hope i want to do a surgery simulation, the rope is intent to mimic the 2 arteries around the liver, they would be pushed away by the tool. Since coppeliaSim can't simulate the soft tissue, I want to use a rope to find a possible approximation to i...
- 27 Mar 2021, 04:42
- Forum: General questions
- Topic: Collision force too big
- Replies: 5
- Views: 1314
Re: Collision force too big
Hi coppelia, thanks for the suggestion, i have tried the first two, speed from 1 to 0.1, add linear and angular damp for segments and joints however, the result is still not ideal, the joints can't hold the segments and break, the tool was still bounced away but with smaller reaction https://i.ibb.c...
- 25 Mar 2021, 07:54
- Forum: General questions
- Topic: Collision force too big
- Replies: 5
- Views: 1314
Collision force too big
Hi, I am doing the interaction between a cylinder shape tool and a rope (built by cylinder shape segments and sphere as joint), https://i.ibb.co/3YVmPSG/tool-rope.png when they collide, the tool is bounced away, i also print out the collision force using sim.getContactInfo in sysCall_actuation() of ...
- 08 Feb 2021, 08:58
- Forum: General questions
- Topic: Spherical joint controlled by parallel manipulator
- Replies: 3
- Views: 518
Re: Spherical joint controlled by parallel manipulator
Made a stupid mistake, now everything fine. If someone faces the same thing, add one more passive revolute joint in z direction.
- 05 Feb 2021, 11:51
- Forum: General questions
- Topic: Spherical joint controlled by parallel manipulator
- Replies: 3
- Views: 518
Re: Spherical joint controlled by parallel manipulator
Still got the same result: rotating around only x either y, depending on which one has bigger max force. Things I also tried, but failed: 1) all the parts have similar mass 0.1-0.2 and principal moment of inertia / mass 0.1 for x,y,z. 2) deselect the responsible option for all "respondable"...
- 05 Feb 2021, 09:06
- Forum: General questions
- Topic: Spherical joint controlled by parallel manipulator
- Replies: 3
- Views: 518
Re: Spherical joint controlled by parallel manipulator
Found the scene error, the objects have collision, let me solve it first and come back to you...
- 04 Feb 2021, 16:54
- Forum: General questions
- Topic: Spherical joint controlled by parallel manipulator
- Replies: 3
- Views: 518
Spherical joint controlled by parallel manipulator
Hi coppeliaSim, as the subject said, I am now facing the parallel manipulator setting problem, hope you or other users can help me with it :) here is my scene: https://drive.google.com/file/d/1-thaE7lSYF2n2eWGTvfzX2PkqH4O2WMs/view?usp=sharing , where I set one passive revolute joint for each active ...