00000ctm a22000004i 4500 UP-99796217612121082 Buklod 20230215105418.0 m |o d | ta 160621s xx d r |||| u| (iLib)UPD-00255307811 DENGII rda eng DMLUC LG 993.5 2013 E63 B58 Biton, Nophi Ian D. author. Constitutive relations of springs to model and simulate reinforced concrete frames Nophi Ian D. Biton ; William L. Mata, Eric Augustus J. Tingatinga, advisers. Quezon City College of Engineering, University of the Philippines Diliman 2013. x, 33 leaves color illustrations 28 cm text rdacontent unmediated rdamedia volume rdacarrier Thesis (B.S. Civil Engineering)--University of the Philippines Diliman May 2013. The study aims to propose with constitutive relations of springs that may be utilized in a model of reinforced concrete (RC) buildings using Rigid Body Spring - Discrete Element Method. An investigation of various failure mechanisms of RC beams and columns was done based from literature. The capacity of bisymmetric RC section in all force actions (axial, shear, flexure and torsion) were derived using basic theories and empirical studies. The control points of the capacity curves were used to define the nonlinear parameters of the spring corresponding to the force actions. A new spring which is capable of modeling all four basic force actions of RC was made available. The springs were tested and proven effective for simple dynamic problems. Finally, a set of failure criteria for a system of springs was proposed. Reinforced concrete. Materials Dynamic testing. Mata, William L. adviser. Tingatinga, Eric Augustus J. adviser. Thesis FI UP UPD DENG-II LG 993.5 2013 E63 B58 Thesis