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FEA or finite element modelling is a useful tool for ensuring parts are not over stressed or over engineered.

At Austratek we use conventional stress analysis (text book) , australian design standards and fea.

Here are some FEA examples to view

Rheon extruder die,  succesful part made and in service
insulation packer main plate torque load check. check ok with factor of safety 2.5 for worst possible load case (client attempted to make part thinner, had  failure then retroffitted to recommended design)
extruder die for clextral cl92, uncle tobys bran line	view cosmos express report