What Is the Triggering Moment for Turbine Safety Devices in a 4-Link Mechanism?

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The discussion focuses on determining the triggering moment for safety devices in a turbine, specifically the friction lever and shear pin, which function as torque limiters. The user seeks guidance on solving a nonlinear dynamic problem involving rigid body motion within a planar 4-link mechanism. The goal is to analyze load distribution throughout the pin lever assembly to redesign it for safety. The user acknowledges the need for multibody dynamic analysis to achieve this. Additional resources, including patent links, are provided for reference.
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How to solve this problem? Help me please

Hi All,

A I got a nice project to do there is a safety device in turbine called Friction lever and shear pin which acts like a torque limiter ,that is the shear pin breaks when the excessive load is acting on the system.[The friction device which is connected to a guide vane detaches when there is excessive load in the guide vane of turbine].The geometry of model is exactly like a planar 4 link mechanism.with rotations possible at fixed pins
the objective is to find the triggering moment acting on both the devices.to find the load distribution through out the pin lever assembly and there by redesign the assembly for a safe region.
Can you advice this belong to which category and how to solve?
By my understanding is a nonlinear dynamic problem with rigid body motion so that we have to perform a multibody dynamic analysis to get the load distribution.please help me
 
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Can you show a diagram?
 

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