asdeasoft.net

Hi STKO,
I am simulating a soil-pile interaction using py, tz, qz model. However, the piles are inclined with an angle of 20 deg with respect to vertical direction. Do you know how to create a local axis with an angle of 20 deg with respect to vertical direction? I can make a local axis with an angle, but I can not define a specific angle (20deg), as you can see in the attached figure.
Thank you for your support,
Buu

Hi, STKO allows the user to specify the local axis by asking to coordinates of axes directions. Please refer to the attached figure.

When you define the local axis you can define (either by clicking on existing points or by typing the 3 points of the local X-Y plane) the direction vectors.
The components of the normalized direction vectors are the cos and sin of your angles.
Just do your math knowing that:

• direction-X = normalized(second-point - first-point)
• direction-Y-temporary = (third-point - first-point) (just used to define the XY plane)
• direction-Z = cross(direction-X, direction-Y-temporary)
• direction-Y = cross(direction-Z, direction-X) -> make them orthogonal