| 摘要 | 第6-8页 |
| Abstract | 第8-10页 |
| Chapter 1 Introduction | 第15-28页 |
| 1.1 Brief introduction to composites materials | 第15-17页 |
| 1.2 Composites for tribological applications | 第17-22页 |
| 1.2.1 Engineering composite materials | 第17-18页 |
| 1.2.2 Natural composite materials | 第18-19页 |
| 1.2.3 Evaluation of the wear of composites | 第19-22页 |
| 1.3 Numerical simulation of wear | 第22-25页 |
| 1.3.1 Application of wear simulation | 第22-23页 |
| 1.3.2 Simulation of wear by numerical methods | 第23-24页 |
| 1.3.3 Wear laws adopted in numerical application | 第24-25页 |
| 1.4 Objective and organization | 第25-28页 |
| Chapter 2 Analytical estimates of the wear of fiber-reinforced composites | 第28-63页 |
| 2.1 Introduction | 第28-31页 |
| 2.2 A micromechanical approach for determining the effective wear | 第31-36页 |
| 2.3 Estimations for the effective wear of fiber-reinforced composites | 第36-45页 |
| 2.3.1 Estimation of the load ratios under uniform strain | 第36-41页 |
| 2.3.2 Estimation of the load ratios under uniform stress | 第41-42页 |
| 2.3.3 Estimation of the load ratios under uniform frictional stress | 第42页 |
| 2.3.4 Effect of Poisson's ratio on effective wear compliance | 第42-44页 |
| 2.3.5 Comparison of effective wear compliances | 第44-45页 |
| 2.4 Numerical applications and discussions | 第45-51页 |
| 2.5 Wear estimates of fiber reinforced viscoelastic composites | 第51-61页 |
| 2.5.1 Constitutive law of fiber and matrix | 第51-55页 |
| 2.5.2 Numerical example of PTFE-GF composite | 第55-56页 |
| 2.5.3 Numerical example of biocomposites | 第56-61页 |
| 2.6 Closing Remarks | 第61-63页 |
| Chapter 3 Numerical analysis of the wear of fiber-reinforced composites | 第63-94页 |
| 3.1 Introduction | 第63-64页 |
| 3.2 Wear simulation by numerical analysis | 第64-69页 |
| 3.2.1 Finite element contact model | 第64-66页 |
| 3.2.2 Wear at nodes of model | 第66-68页 |
| 3.2.3 Material properties of fiber and matrix phases | 第68-69页 |
| 3.2.4 Wear of fiber and matrix phases | 第69页 |
| 3.3 Determination of a Representative Surface Element (RSE) | 第69-72页 |
| 3.3.1 RSE under normal loading | 第69-71页 |
| 3.3.2 RSE in the case of frictional loading | 第71-72页 |
| 3.4 Verification of the assumption of theoretical estimates | 第72-82页 |
| 3.4.1 Load proportion under the normal loading and the sliding with friction | 第73-76页 |
| 3.4.2 Discrepancy of strain and stress distribution of two phases | 第76-77页 |
| 3.4.3 Composite wear without variation of contact surface | 第77-78页 |
| 3.4.4 Composite wear after the variation of contact surface | 第78-82页 |
| 3.5 Wear analysis of composites reinforced with oblique fibers | 第82-92页 |
| 3.5.1 Load proportion | 第84-86页 |
| 3.5.2 Wear volume and wear compliance | 第86-92页 |
| 3.6 Closed remarks | 第92-94页 |
| Chapter 4 Homogenization of elastoplastic particle-reinforced composites | 第94-124页 |
| 4.1 Introduction | 第94-95页 |
| 4.2 Constitutive laws for the particle and matrix phases | 第95-102页 |
| 4.2.1 Elastic properties of the matrix and particles | 第95-96页 |
| 4.2.2 Mohr-Coulomb and Drucker-Prager yield criteria for the matrix phase | 第96-100页 |
| 4.2.3 Non-associated flow rule | 第100-102页 |
| 4.3 Effective elastoplastic behavior of particulate composites under isotropic loading | 第102-110页 |
| 4.3.1 Micromechanical model | 第102-104页 |
| 4.3.2 General results | 第104-106页 |
| 4.3.3 Loading modes | 第106-110页 |
| 4.4 Porous media under external and internal hydrostatic loading | 第110-116页 |
| 4.4.1 Constitutive law of matrix | 第110-111页 |
| 4.4.2 General results | 第111-116页 |
| 4.5 Numerical applications and discussions | 第116-122页 |
| 4.5.1 Elastoplastic behavior of particle-reinforced composites or porous media under isotropic loading | 第116-119页 |
| 4.5.2 Porous media subjected to the external and internal hydrostatic loading | 第119-122页 |
| 4.6 Concluding remarks | 第122-124页 |
| Chapter 5 Homogenization of elastoplastic fiber-reinforced composites under radial loading | 第124-140页 |
| 5.1 Introduction | 第124页 |
| 5.2 Local constitutive laws | 第124-127页 |
| 5.3 Micromechanical model | 第127-128页 |
| 5.4 General results | 第128-136页 |
| 5.4.1 Initial plastification | 第128-131页 |
| 5.4.2 Elastoplastic stage | 第131-135页 |
| 5.4.3 Total plastification | 第135-136页 |
| 5.5 Elastoplastic behavior of composite with von Mises matrix | 第136页 |
| 5.6 Numerical examples | 第136-137页 |
| 5.7 Closing remarks | 第137-140页 |
| Chapter 6 Wear estimates of fiber-reinoforced composites with elastoplastic matrix | 第140-152页 |
| 6.1 Introduction | 第140页 |
| 6.2 Local constitutive laws | 第140-142页 |
| 6.3 Preliminary results | 第142-148页 |
| 6.3.1 Elastic stage | 第142-144页 |
| 6.3.2 Elastoplastic stage | 第144-147页 |
| 6.3.3 Total plastification | 第147-148页 |
| 6.4 Numerical application | 第148-150页 |
| 6.5 Closing remarks | 第150-152页 |
| Conclusion | 第152-154页 |
| Acknowledgements | 第154-155页 |
| Appendix | 第155-156页 |
| Reference | 第156-166页 |
| 攻读学位期间发表的学术论文 | 第166页 |
