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Unformatted text preview: Determine applied loads and operating Design restrictions/specifications SOURCES OF APPLED LOADS (and resulting stresses and strains) Normal operative environment Environmental effects Isolated effects/special conditions TERMINOLOGY Limit load/stress/condition: maximum load/stress/condition where structure shows no permanent deformation (operationally defined as maximum condition the structure is expected to see under normal operation) Ultimate load/stress/condition: maximum load/stress/condition where structure does not fail (operationally defined as limit condition times factor of safety). Ultimate Factor of Safety = Ultimate Condition (design value) Limit Condition Margin of Safety = Tested Value Design Value (experimental reality) Design Value Definition of failure depends on operational requirements. Paul A. Lagace 2002 Handout 1-2...
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This note was uploaded on 02/03/2012 for the course AERO 16.20 taught by Professor Paullagace during the Fall '02 term at MIT.
- Fall '02