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I would like to ask for advice or guidance on how to model a hinge connection (nodes 30, 31, 32) between two rigid body systems composed of oscillators (see the image). Both the tractor and semi-trailer are assumed to be rigid bodies connected at a hitching point (node 30). This hitching point impos...

I’ve found a solution by generating an additional point at the center of mass (Point 11) and connecting it rigidly to Points 1 and 101, where the unsprung mass of the wheel is located.

Dear Prof. Scott, Thank you for your response. Using a rigid beam to connect the center of mass to the oscillators provides an appropriate solution. Attached is the working code. import openseespy.opensees as ops import opsvis as opsv import matplotlib.pyplot as plt import numpy as np # ============...

Hello, I’m working on building a half-car model using CoupledZeroLength elements. The model has 4 degrees of freedom (DoF), including the vertical displacements of the individual masses and the lateral rotation about the vehicle’s center of mass. https://imgur.com/a/hn5qoax I’ve attached the code I’...

I solved the problem by changing (decrease) the step dt in the analysis and removing the Rayleigh damping factors for nodes & elements.

So now the same results were obtained.

Hello everyone, I'm new to OpeenSeesPy and haven't mastered the platform's capabilities yet, so don't blame me if I've made some beginner mistakes. I tried to analyze a simple beam under a single moving force, which moves at a constant speed of v=100km/h (see Fig. 1). https://imgur.com/2zXjl5j https...