| Name： |
Xu Jia |
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| Gender： |
Male |
| Talent plan： |
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| Professional title： |
Lecture |
| Post： |
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| Institution： |
Mechanics |
Specialty： |
Mechanics |
| Email： |
xujia@tju.edu.cn |
Personal website： |
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| Tel： |
+86(0)22 27401981 |
Fax： |
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| Office： |
Mechanical Engnerring |
| Education： |
09/99 07/03 Bachelor Degree Tianjin University Engineering Mechanics
09/03 07/05 Master Degree Tianjin University Engineering Mechanics
09/05 07/08 Doctoral Degree Tianjin University Engineering Mechanics
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| Academic experience： |
11/08 Tianjin University Lecturer
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| Research interest： |
Stochastic nonlinear dynamics theory and its application in mechanical structure
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| Teaching： |
Theoretical mechanics、Analytical mechanics
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| Academic position： |
Deputy Secretary General of Tianjin Institute of vibration engineering;
Senior member of China micron and nano society.
Composites Part B, Discrete Dynamics in Nature and Society and other SCI journal reviewers.
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| Academic achievement： |
The improved Van Der Pol differential term is introduced into the modeling of hysteretic nonlinear dynamics of smart materials. The hysteretic nonlinear dynamic characteristics of materials are described by using continuous differentiable functions instead of piecewise functions. Its stochastic stability and bifurcation characteristics are analyzed, and the first crossing (failure) and control strategy are further analyzed. The conclusions obtained are of great theoretical significance and practical value for the practical application of smart materials in mechanical structures. Poisson excitation and perturbation method are improved to better solve the nonlinear dynamic model under Poisson excitation. The steady-state probability density of the system is analyzed with the change of parameters. The conclusions obtained have important theoretical and practical significance for the design and application of high-speed train.
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| Research projects： |
1. Strong nonlinear dynamic characteristics and applications of giant magneto-memory alloy controllers, supported by the National Natural Science Foundation of China.
2. Nonlinear characteristics of magneto-electric coupling of giant magnetostrictive-piezoelectric composite sensor, National Natural Science Foundation of China Youth Foundation;
3. Research on nonlinear characteristics and control of giant magnetostrictive-shape memory alloy shock absorber. National innovative training program for undergraduates.
4. Study on coupling nonlinear characteristics of giant magnetostrictive-piezoelectric composite sensor, youth project of Tianjin Application Foundation and Frontier Technology Research Program;
5. Research on Stochastic Nonlinear Dynamics of High Speed Train-Wheel-Rail Coupling under Poisson Excitation, PhD Foundation (New Teachers).
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| Selected publications： |
Jia Xu, Chao Li , Yi-ran Li, C W Lim and Zhi-Wen Zhu*; Stochastic resonance and safe basin of single-walled carbon nanotubes with strongly nonlinear stiffness under random magnetic field; NANOMATERIALS; 8(5);2018;298；
Jia Xu, Jian Li, Hongli Wang, Zhi-Wen Zhu*; Stochastic resonance phenomenon and bifurcation characteristics of Li-doped graphene considering nonlocal effect on graphene's stiffness; INTERNATIONAL JOURNAL OF HYDROGEN ENERGY; 41(37); 2016; 15740-15746；
Jia Xu, Wen-Di Zhang, Zhi-Wen Zhu*; Stochastic stability and bifurcation characteristics of multiwalled carbon nanotubes-absorbing hydrogen atoms subjected to thermal perturbation; INTERNATIONAL JOURNAL OF HYDROGEN ENERGY; 40(37); 2015; 12880-12888；
Zhu ZW, Wen YQ, Sheng H, Xu J*; Nonlinear dynamic characteristics and bifurcation analysis of Al-doped graphene impacted by hydrogen atoms; INTERNATIONAL JOURNAL OF HYDROGEN ENERGY; 42(47); 2017; 28507-28514；
Zhi-Wen Zhu, Ce Guo, Jia Xu*; Thermodynamic characteristics and bifurcation of multiwalled carbon nanotubes impacted by hydrogen atoms using Nonlocal continuum theory; INTERNATIONAL JOURNAL OF HYDROGEN ENERGY; 41(35); 2016; 15747-15755；
Zhi-Wen Zhu, Xin-Miao Li, Jia Xu*; Stochastic nonlinear dynamic characteristics and safe basin of Li-doped graphene impacted by hydrogen atoms; INTERNATIONAL JOURNAL OF HYDROGEN ENERGY; 40 (37); 2015; 12889-12896.
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