Dynamic Stress From Transverse Impact On Flexural Beams

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Title: Dynamic Stress From Transverse Impact On Flexural Beams
Author: Ballard, Joshua
Abstract: Accurate prediction of stress from impact would be very useful to an engineer in the design and analysis phases of a project . Currently one must resort to finite element analysis and experimentation , both of which have their negatives . Classical hand analysis methods such as the work -energy method overestimate the stress for a weight dropped onto the tip of a cantilevered beam . The goal of this project was to formulate analytical equations that were straightforward and easy to implement that would more accurately predict the dynamic stress in this scenario . Using the already derived equations from the work -energy method , a modification factor was sought that would allow for a more useful answer . The approach was to collect experimental data from a weight being dropped onto a cantilevered beam . Different geometries were used as were multiple drop heights . This data was then used to formulate a relationship between drop height and stress . These new equations were then used to modify the original impact equations . The new equations successfully accounted for the experimental data and are believed to be useful for design purposes . However , the equations were not general and seemed applicable only to the specific setup for which they were formulated .
URI: http : / /hdl .handle .net /10106 /2052
Date: 2010-03-03

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Dynamic Stress From Transverse Impact On Flexural Beams. Available electronically from http : / /hdl .handle .net /10106 /2052 .

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