1. Department of Mechanical and Energy Engineering, University of North Texas, Denton, TX 76203; School of Civil Engineering, Dalian University of Technology, Dalian 116024, China
2. Department of Mechanical and Energy Engineering, University of North Texas, Denton, TX 76203; School of Civil and Safety Engineering, Dalian Jiaotong University, Dalian 116028, China
3. Department of Mechanical and Energy Engineering, University of North Texas, Denton, TX 76203 e-mail: