Composites Research

The Korean Society for Composite Materials (한국복합재료학회)
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Low-Velocity Impact Analysis and Contact Law on Composite Laminates

복합적층판에 대한 저속충격해석과 접촉법칙

  • Published : 2003.02.01
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Abstract

Usually many researchers have used the modified Hertzian contact law or experimental static indentation law to analyze impact response of composite laminates subjected to the low-velocity impact. In this study, physical meaning of the method using the laws was investigated and the difference between the analytical results obtained using the laws was also investigated. Furthermore parametric study on contact constant and exponent in the contact law was performed. Finally it was shown that a linearized contact law can be well applied to low-velocity impact response analysis of composite laminates. If this concept is used, commercial finite element software can be used to solve impact problem without making any auxiliary code.

저속충격을 받는 복합적층판의 충격거동을 해석하기 위하여 많은 연구자들이 수정된 Hertz의 접촉법칙이나 실험적으로 구한 정적압입법칙을 사용하여 왔다. 본 연구에서는 이들이 사용했던 충격해석방법에 대만 물리적 의미를 고찰하였으며, 두 법칙의 차이가 실제로 적층판의 충격거동해석에 미치는 영향을 고찰하였다. 나아가 접촉법칙에 사용되는 접촉상수 및 지수의 크기를 임의로 변경하여 해석함으로써 접촉법칙이 충격거동해석의 결과에 미치는 영향을 살펴보았다. 최종적으로 선형화된 접촉법칙을 적용하여도 충격거동해석을 정확히 수행할 수 있음을 보였다. 이 개념을 응용하면 충격문제해석을 위한 부가적인 프로그램 개발 없이 범용 유한요소해석 프로그램으로도 복합적층판의 저속충격거동을 해석할 수 있음을 보였다.

Keywords

References

  1. Composite Structures v.51 Modeling of Impacts on Composite Structures S. Abrate https://doi.org/10.1016/S0263-8223(00)00138-0
  2. Applied Mechanics Review, ASME v.47 no.11 Impact on Laminated Composite : Recent Advances S. Abrate https://doi.org/10.1115/1.3111065
  3. Composite v.22 no.5 The Impact Resistance of Composite Materials - A Review W. J. Cantwell;J. Morton https://doi.org/10.1016/0010-4361(91)90549-V
  4. ASTM STP 617, American Society for Testing and Materials An Analytical Method for Evaluation of Impact Damage Energy of Laminated Composites C. T. Sun
  5. ASTM STP 787, American Society for Testing and Materials Indentation Law for Composite Laminates S. H. Yang;C. T. Sun
  6. NASA CR 168057 Wave Propagation in Graphite/Epoxy Laminates Due to Impact T. M. Tan;C. T. Sun
  7. Journal of Composite Materials v.19 On the Impact of Initially Stressed Composite Laminates C. T. Sun;J. K. Chen https://doi.org/10.1177/002199838501900601
  8. Composite Structures no.4 Dynamic Large Deflection Response of Composite Laminates Subjected to Impact J. K. Chen;C. T. Sun
  9. Computers & Structures v.31 no.3 Transient Dynamic Analysis of Laminated Composite Plates Shbjected to Transverse Impact H. T. Wu;F. K. Chang https://doi.org/10.1016/0045-7949(89)90393-3
  10. Composite Structures v.23 Delaminations in Composite Plates Under Transverse Static of Impact Loads - A Model S. R. Finn;G. S. Springer https://doi.org/10.1016/0263-8223(93)90221-B
  11. Mechanics of Composite Materials and Structures v.1 Low-Velocity Impact Response of Composite Laminates Considering Higher-Order Shear Deformation and Large Deflection I. H. Choi;C. S. Hong https://doi.org/10.1080/10759419408945825
  12. Journal of Mechanics and Physics of Solids v.14 Hertzian Contact of Anisotropic Bodies J. R. Willis https://doi.org/10.1016/0022-5096(66)90036-6
  13. Journal of Applied Mechanics, Transactions of ASME v.52 Use of Statical Indentation Laws in the Impact Analysis of Laminated Composite Plates T. M. Tan;C. T. Sun https://doi.org/10.1115/1.3169029
  14. AIAA Journal v.32 no.10 New Approach for Simple Prediction of Impact Force History on Composite Laminates I. H. Choi;C. S. Hong https://doi.org/10.2514/3.12253