The finite element method is a computer-based technique for modeling the behaviour of components under various types of loading.  Zeus Engineering Ltd. uses our in-house finite element package COSMOS/M to carry out stress analysis and has many of the add-on modules including linear elastic, elastic-plastic, non linear, heat transfer, complex dynamic vibrations and fatigue.  The results of these analyses can be summarized in stress/displacement contour plots as well as line/section graphs.

A proposed structural modification to a Canadian R-class icebreaker was investigated using finite element analysis and various ice loads stipulated by shipping regulation codes.  The completed analysis confirmed the acceptability of the modifications and they were subsequently implemented.

Welded modifications to an existing thin-wall structure resulted in a marked reduction in fatigue life.  Finite element analysis of the structure before and after the changes revealed the modifications acted to increase the local stress at the toe of an added welded gusset.  Once identified, steps were taken to correct the unanticipated stress concentration and restore the endurance limit of the component.

After repeated cracking in the side plates of a crane, the operating company requested a more permanent repair be developed.  The horse-head of the subject crane was subsequently modeled and the root cause of the cracking identified.  Modifications to the arrangement were made and it’s suitability was confirmed by additional modeling.

Zeus Engineering Ltd.
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