윤활공학 (4) Ch.3 Contact between surfaces (1).pdf - 2018년 Ch.3 Contact Between Surfaces 경북대학교 기계공학부 김성열 교수 Contact

윤활공학 (4) Ch.3 Contact between surfaces (1).pdf -...

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경북대학교 기계공학부 김성열 교수 2018 Ch.3 Contact Between Surfaces
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Contact Problems in Tribology
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3.1 Concentrated line loading F External force Stress ( 응력 ) W W/L O X Semi-infinite half space ( 무한 탄성체 ) (2 차원 탄성문제 ) Timoshenko and Goodier(1951) “Elasticity” ( 탄성론 교재 ) (3.12) (3.13) (3.15) Biharmonic equation( 중조화 함수 ) 삼각함수 (sin,cos) (3.16)
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Polar Coordinate (note) Polar coordinate : 극좌표 x ɵ P(r,ɵ) r: 반경좌표 ɵ: 편각좌표 z (3.19) (3.20) (3.21) x ɵ -z w/L σ ɵ σ r
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