MV-3021: Optimize an Impact Absorber
In this tutorial you will learn how to setup an optimization problem using MotionView's Optimization Wizard for an impact absorber.
- Defining stiffness and damping of SpringDamper element as design variables
- Defining responses of type MaxVal
- Using the responses as objectives
- Running the optimization and post-processing the results
- Introduction
- An impact absorber is modeled as a single degree of freedom system with a mass m, a linear stiffness k and a linear damping coefficient c. The velocity of the mass is 1 m/s; Mass m = 1 kg and a transient analysis end time of 12 seconds is used. The objective of the optimization is to minimize the maximum acceleration of the mass in the time interval 0 to 12s subject to the condition that the maximum displacement is less than 1m. In order to achieve this, stiffness k and damping ratio c are modeled as design variables. MotionSolve's FD (Finite Differencing) capability is used to calculate sensitivities.
Add Design Variables
In this step, you will add design variables for the optimization.
Add Response Variables
In this step you will add response variables for the optimization.
- Maximum z direction acceleration of mass
- Maximum z direction displacement of mass
Add Objectives and Constraints
Now you will add objectives and constraints to the problem.
Run the Optimization
In this step you will run the optimization.
Post-Process
In this step, you will post-process the optimization results of the impact absorber.