Design optimization of low impact transmission foundation for forging hammers

Abstract

Purpose

The objective of this work is to introduce a new method to carry out design optimization of a mechanical system for vibration and shock isolation, in particular, the viscous spring isolator mounting system for a forging hammer.

Design/methodology/approach

The system dynamics model for an isolated foundation and solution technique for obtaining system response under impact loads is introduced. A design optimization problem is formulated to minimize the maximum impact force transmissibility under design constraints, using stiffness and damping coefficients of the isolator, mass of the foundation block and support area of soil as design variables. A dedicated simulated annealing (SA) algorithm is applied to solve the optimization problem.

Findings

Viscous spring isolator mounting system, if properly designed, can considerably reduce shock and vibration transmission and the size of the foundation. The optimization leads to a mounting system with superior impact and vibration isolation capability over conventional designs. Sensitivity study and design optimization on a typical 3‐ton forging hammer has demonstrated the advantages of the new design method.

Research limitations/implications

To further improve the accuracy of the design optimization, a more detailed system dynamics model might be introduced.

Practical implications

The work leads to a better design method for viscous spring isolator foundation systems.

Originality/value

This study forms the foundation for further research on design optimization of viscous spring isolator foundation systems, and contributes to the application of SA optimization technique to engineering design.

Citation

Wang, G. and Dong, Z. (2006), "Design optimization of low impact transmission foundation for forging hammers", Engineering Computations, Vol. 23 No. 2, pp. 166-186. https://doi.org/10.1108/02644400610644531