"T. Pipatpongsa,Dedi Apriadi,Suched Likitlersuang,H. Ohta","Consistent integration for Iwan spring model under multisurface hyperplasticity framework","JSCE Annual Meeting 2009","第64回年次学術講演会公演概要集","JSCE",,,"pp. 1281-1282",2009,Sept.
"T. Pipatpongsa,H.Ohta","Theoretical analyses of arch action and stress distribution due to bin effect in storage silo of granular media","The 44th National Conference of Japan Geotechnical Engineering","The Proceedings of the 44th National Conference of Japan Geotechnical Engineering","The Japansese Geotechnical Society",,,"pp. 353-354",2009,Aug.
"D. Apriadi,S. Likitlersuang,T. Pipatpongsa,H. Ohta","On the numerical implementation of hyperplasticity non-linear kinematic hardening modified cam clay model",,"Journal of The Institution of Engineers, Singapore","Taylor & Francis","  Part A: Civil & Structural Engineering","No. 2:3","pp. 187-201",2009,Aug.
"S. Heng,T. Pipatpongsa,H.Ohta","Stress analyses of central pressure dip phenomenon underneath two-dimensional sand heaps","The 44th National Conference of Japan Geotechnical Engineering","Proceedings of the 44th National Conference of Japan Geotechnical Engineering","The Japanese Geotechnical Society",,,"pp. 351-352",2009,Aug.
"M.H. Khosravi,T. Pipatpongsa,A. Majdi,H. Ohta","Critical grouting pressure prediction in Iran Kheirabad rock mass based on fracture mechanics approach","The 44th National Conference of Japan Geotechnical Engineering","The Proceedings of the 44th National Conference of Japan Geotechnical Engineering","The Japanese Geotechnical Society",,,"pp. 445-446",2009,Aug.
"T. Pipatpongsa,S. Heng,A. Iizuka,H. Ohta","Rationale for coefficient of earth pressure at rest derived from prismatic sand heap",,"Journal of Applied Mechanics JSCE",,"Vol. 12",,"pp. 383-394",2009,Aug.
"Thirapong PIPATPONGSA,Heng Sokbil,HIDEKI OHTA,Atsushi Iizuka","Analyses of pressure distribution under 2D sand heap by considering arching effect","NCTAM2009","NCTAM2009","Japan Society of Civil Engineers",,,"pp. 391-392",2009,June
"T. Pipatpongsa,MOHAMMAD HOSSEIN KHOSRAVI,H. Ohta","Backward-Euler stress update algorithm for the original Cam-clay model with  vertex singularity","International Symposium on Prediction and Simulation Methods for Geohazard Mitigation (IS-Kyoto 2009)","Prediction and Simulation Methods for Geohazard Mitigation","CRC Press",,,"pp. 179-184",2009,May
"T. Pipatpongsa,T. Takeyama,H. Ohta,A. Iizuka","On the vertex singularity of the Sekiguchi-Ohta model",,"Theoretical and Applied Mechanics Japan","Science Council of Japan","Vol. 57",,"pp. 89-94",2009,Feb.
"T. Pipatpongsa,S. Heng,H. Ohta","Statics of granular media in wedge-shaped heap",,"The 6th Regional Symposium on Infrastructure Development",,,,"  GEO-7",2009,Jan.