Why import complicated stl file will caused problem on gazebo?

Question

My cad translate to stl file is

I use meshlab to view it:

But when I import to gazebo.

 sam@/home/sam/code/ros/gazebo/stl$ rosrun gazebo spawn_model -file      `pwd`/foot.urdf -urdf -model foot_model -z 100.5
 loading model xml from file
 attempting to spawn robot in simulation
 waiting for service spawn_urdf_model
 spawn status:  SpawnModel: successfully spawned model
 spawning success True
 
 sam@/home/sam/code/ros/gazebo/stl$

The model seems very weird even broken to parts.

How to solve it? Thank you~~

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Originally posted by sam on ROS Answers with karma: 2570 on 2011-08-13

Post score: 1

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Original comments

Comment by sam on 2011-08-21:
I have added the picture in meshlab, and I also upload the stl file: http://www.adrive.com/public/8796d1359372a369f97531afc9a972ad728f8e47d46b8746e2a3242b27619be4.html

Comment by hsu on 2011-08-15:
you can try and import the stl file with some other mesh editors such as meshlab or wings3d (or blender if the top image was not a stl import). If things look ok there, can you post the STL file? thanks.

Comment by sam on 2011-08-15:
Single STL. I haven't tried Multiple STL's connected by joints.

Comment by hsu on 2011-08-15:
Hi Sam, is this a single STL? Multiple STL's connected by joints?

Answer 1

It looks like the mesh contains faces that are not 2-manifolds. I recommend shrink-wrapping the mesh with one of the modern cad packages.

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Originally posted by hsu with karma: 5780 on 2011-08-24

This answer was ACCEPTED on the original site

Post score: 0

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Original comments

Comment by sam on 2011-08-25:
Autodesk Inventor Professional 2012.

Comment by hsu on 2011-08-24:
what software are you using to generate STL from CAD model?

Comment by sam on 2011-08-24:
I already use the smallest resolution option of stl export.Is there any other way to shrink-wrapping the mesh? Or how to import it to gazebo correctly?