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High velocity and impact loading

Posted by admin on July 25th, 2012
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High velocity loading refers to velocities greater than one meter per second, while impact loading refers to velocities greater than 50 meters per second. Avoid high velocity and impact loading on areas that are highly stressed from residual and/or assembly stresses. When designing a part that must withstand these types of loading conditions, keep the following suggestions in mind.

Use proportional limit

Use the Proportional limit in the design calculation for the expected loading rate range.

Avoid stress concentration

To avoid stress concentration, use a smooth, generous radius in areas like corners where the width and thickness change.

Avoid material degradation

High melt temperatures over a prolonged period of time can cause the resin to become brittle. The amount of time the resin is at high temperatures should be minimized by selecting a proper melt temperature and by sizing a proper injection barrel to fit the job.

 

Author: ZHILIAN MOULD
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