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Application of the Absorbing Boundary Condition in Moving Force Analysis of Asphalt Concrete Track

흡수경계조건의 아스팔트 콘크리트 궤도 동적 해석에의 적용

Lee, Seonghyeok;Chung, Keunyoung;Jung, Wooyoung
이성혁;정근영;정우영

  • Received : 2015.09.21
  • Accepted : 2015.12.23
  • Published : 2016.02.29

Abstract

In this study, the absorbing boundary condition was adopted to prevent elastic wave propagation due to abrupt load condition changes in moving force analysis. It was proven to be effective in reducing inappropriate noise components. Furthermore, to verify whether fixed point excitation in a laboratory test can simulate train movement effectively, the results of dynamic analysis for fixed point excitation and moving force conditions were analyzed. The dynamic stability of an asphalt track structure under a KTX train condition was also studied. Additionally, the dynamic safety of asphalt tracks was verified by comparing the results of a moving force analysis under a KTX train load and a quasi-static analysis under the design standard Korean train load.

Keywords

Asphalt concrete track;Moving force analysis;Absorbing boundary conditions;Fixed point excitation

References

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Acknowledgement

Supported by : 한국철도기술연구원