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Design a 4-bar Grashof crank-rocker mechanism for 90° of output rocker motion with no quick-return action. Simulate your mechanism on ADAMS and determine the minimum transmission angles from the model.

Answer :

Final answer:

A 4-bar Grashof crank-rocker mechanism is designed based on Grashof's law and requires careful understanding of the relationship between link lengths and pivot locations. However, the simulation on ADAMS software and determining minimum transmission angles must be done using the software.

Explanation:

To design a 4-bar Grashof crank-rocker mechanism with 90° of output rocker motion without quick-return action, you would first need to understand that a crank-rocker mechanism is a four-bar linkage. In this linkage, the output link oscillates between two extreme positions. Secondly, keep in mind that according to Grashof’s law, for a four-bar linkage to have at least one link that can rotate 360°, the sum of the shortest and longest link lengths must not be greater than the sum of the remaining two link lengths.

Unfortunately, performing the simulation on ADAMS software and determining the minimum transmission angles is a task that requires doing in the software itself and cannot be clearly explained or shown through this text-based platform.

Simulations like this allow you to visualize the motion and observe the relationship between link lengths, pivot locations, output angle, and understand movements that wouldn't be as obvious in a static diagram, like the 90° of output motion specified in your question.

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