School of Mechanical Engineering Zhengzhou University Zhengzhou 450001 China;
Department of Civil Engineering University of Siegen 57076 Siegen Germany;
School of Mechanical Engineering Zhengzhou University Zhengzhou 450001 China;
School of Mechanical Engineering Zhengzhou University Zhengzhou 450001 China;
School of Mechanical Engineering Zhengzhou University Zhengzhou 450001 China;
Department of Civil Engineering University of Siegen 57076 Siegen Germany;