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COSMOSM helps Milsco create safer vehicle seats
Company
Milsco Manufacturing
Co. |
Industry
Automotive / Transportation |
Location
U.S.A |
Product Used
COSMOSM
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Type of Analysis
Linear Static
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More Details
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Composite seat shells may experience
failure if the vehicle operator uses the seat armrest
as a handle and pulls outwardly on it to gain access
into the vehicle cab.
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The Challenge
Milsco Manufacturing Co., Milwaukee, designs and manufactures custom
seating and seat components. Their products include suspensions, swivels,
isolators, standing supports, office chairs and saddle bags. Milsco's
stated mission: To be a customer-driven, quality-focused, technology-oriented
growth company that designs and manufactures seating products on a competitive
and timely basis.
Recently, Milsco gave John S. Scott,
design engineer for advanced products the task of designing a compression-molded
thermoplastic seat shell for vehicles.
The Solution
Because composite seat shells can fail if the vehicle operator uses
the seat armrest as a handle to gain access to the vehicle cab, Milsco
set up a load case to analyze the effect of an operator pulling outwardly
on the armrest, and the side-to-side armrest loading of a seated operator.
The first analysis showed that the
design met the yield strength requirements, but also had localized hot
spots at the armrest pivot that presented potential fatigue life concerns.
As a result of the analysis, the engineers increased the material thickness
and added larger radii at the critical area.
Summary and Metrics:
- As a result of the analysis, the engineers increased the material
thickness and added larger radii at the critical area.
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"COSMOSM
is important in reducing the time it takes to get the product
the market and then assuring that when it get there, it will
meet our performance, durability and cost targets."
John S. Scott -
Design Engineer
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