2007 Fiscal Year Final Research Report Summary
Development of numerical method for dynamic interaction analysis of high-speed train and railway structure under an earthquake
| Project/Area Number |
17560215
|
|---|
| Research Category |
Grant-in-Aid for Scientific Research (C)
|
| Allocation Type | Single-year Grants |
|---|
| Section | 一般 |
|---|
| Research Field |
Dynamics/Control
|
|---|
| Research Institution | Kanagawa Institute of Technology |
|---|
Principal Investigator |
TANABE Makoto Kanagawa Institute of Technology, Faculty of Engineering, Professor (20179815)
|
|---|
| Co-Investigator(Kenkyū-buntansha) |
KOMIYA Seiji Kanagawa Institute of Technology, Faculty of Creative Engineering, Assistant Professor (90288217)
|
|---|
| Project Period (FY) |
2005 – 2007
|
| Keywords | Dynamic interaction / high-speed train and bridge / Under earthquake / Numerical method / Rail-wheel interaction / Multibody dynamics / Simulation |
|---|
| Research Abstract |
In this work, a simple and efficient numerical method to solve for the dynamic interaction of a high-speed train and railway structure during an earthquake is given. The motion of the train is modeled in multibody dynamics with nonlinear springs and dampers used to connect components. An efficient mechanical model for contact dynamics between wheel and rail during an earthquake is presented. The railway structure is modeled with various finite elements. A nonlinear spring element based on a tri-linear elastic-plastic material model is given for the concrete railway structure during an earthquake. A substructure model where a train runs repeatedly has been devised to obtain an approximated combined motion of the long train with many cars connected and railway structure during an earthquake. A modal method has been developed to solve large-scale nonlinear equations of motion of the train and railway structure effectively.
Based on the present method, a computer program for the dynamic interaction analysis of a Shinkansen train(high speed train in Japan) and railway structure during an earthquake has been developed. Through applications to various problems the validity and effectiveness of the proposed method are shown.
|
