한국자동차공학회논문집 (Transactions of the Korean Society of Automotive Engineers)

  • 제4권2호
  • /
  • Pages.69-79
  • /
  • 1996
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  • 1225-6382(pISSN)
  • /
  • 2234-0149(eISSN)
한국자동차공학회 (The Korean Society of Automotive Engineers)
권호 표지

길이방향의 전단응력을 받은 직교이방성 원판에 내재된 외부균열의 등속전파 응력확대계수 $K_{III}$

Dynamic Stress Intensity Factor $K_{III}$ of Crack Propagating with Constant Velocity in Orthotropic Disk Plate Subjected to Longitudinal Shear Stress

  • 최상인 (정회원, 상주산업댕학교 자동차공학과)
  • 발행 : 1996.03.01
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초록

Dynamic stress intensity factors are derives when the crack is propagating with constant velocity under longitudinal shear stress in orthotropic disk plate. General stress fields of crack tip propagating with constant velocity and least square method are used to obtain the dynamic stress intensity factor. The dynamic stress intensity factors of GLV/GTV=1(=isotropic material or transversely isotropic material) which is obtained in out study nearly coincides with Chiang's results when mode Ⅲ stress is applied to boundary of isotropic disk. The D.S.I.F. of mode Ⅲ stress is greater when α(=angle of crack propagation direction with fiber direction) is 90° than that when α is 0°. In case of a/D(a:crack length, D:disk diameter)<0. 58, the faster crack propagation velocity, the less D.S.I.F. but when crack propagation velocity arrive on ghear stress wave velocity, the D.S.I.F. but when crack propagation velocity arrive on shear stress wave velocity, the D.S.I.F. unexpectedly increases and decreases to zero.

키워드

참고문헌

  1. J. Appl. Mech. v.52 no.3 Effect of Inertia on Finite Near-Tip Deformation for Fast Mode Ⅲ Crack Growth Achenbach, J. D.;Nishimura, N.
  2. Engng. Fract. Mech v.22 no.2 Solution of Rectangular Sheet Containing a Central Crack Propagation at Constant Velocity Under Antiplane Shear Zhang, X. S.
  3. Engng. Fract. Mech. v.27 no.1 Solution of Rectangular Sheet with An Edge Crack Moving at Constant Velocity under Anti-Plane Shear Zhang, X. S.
  4. Arkiv. Fysik. v.18 no.10 The Propagation of Brittle Crack Broberg, K. B.
  5. ASME J. of Appl. Mech. v.29 Dynamic Stress Created by a Moving Crack Baker, B. R.
  6. Engng. Fract. Mech. v.47 no.3 Development of Stress Field Equations and Determination of Stress Intensity Factor During Dynamic Fracture of Orthotropic Composite Materials Khanna, S. K.;Shulkla, A.
  7. Engng. Fract. Mech. v.29 no.5 Crack Propagation in an Orthotropic Medium Piva, A.;Viola, E.
  8. Engng. Fract. Mech. v.34 no.5;6 Crack Propagation in An Orthotropic Medium Under General Loading Viola, E.;Piva, A.;Radi, E.
  9. 대한기계학회 논문집 v.17 no.2 직교이방성채의 동적응력확대계수에 관한연구(Ⅰ) 등속균열 전파속도하에서 동적모드 Ⅰ과 모드Ⅱ 상태의 응력장, 변위장, 에너지해방률에 관한 연구 이광호;황재석;최선호
  10. 대한기계학회 논문집 v.17 no.2 `직교이방성체의 동적응력확대계수에 관한연구(Ⅱ), 등속균열 전파속도하에서 동적모드 Ⅲ 상태의 응력장, 변위장, 에너지해방률에 관한 연구 이광호;황재석;최선호
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  12. Mechanics of Fracture 4(Elastodynimic Crack Problems) Sih, G. C.