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- 1540688
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- 小时
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- 2023-3-20
- 最后登录
- 1970-1-1
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• BG: Manipulate internal stress
○ e.g. dental fillings
• Fracture & failures: stress (-)
• Trurer picture: complicated and interesting
○ Cannot Work a rigid material without stress
§ e.g. manufacturing operations
§ Familiar objects: dental fillings,chips, pipelines
○ Beneficail and harmful
• Great lengths to introduce
○ Measure the stress fields
○ Several trends in engineering design
§ Proliferation of nontraditional materials
□ e.g. comparable body of lore exists
§ Trimming of safety margins
□ e.g. Bridge VS. objects in space
§ Reduction in scale
□ e.g. microscopic mental VS. thick electrical cable
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