Flexural Response of Pile Foundation in Liquefiable Soil Using Finite-Difference Formulation Following Pseudostatic Approach

2020 ◽  
Vol 50 (6) ◽  
pp. 880-906
Author(s):  
Rahul Sinha ◽  
Rajib Sarkar ◽  
J. S. Rajeswari
Keyword(s):  
Finite Difference ◽  
Pile Foundation ◽  
Flexural Response ◽  
Liquefiable Soil ◽  
Finite Difference Formulation

A finite‐difference formulation of borehole wave propagation in prestressed formations

1999 ◽  
Author(s):  
Bikash K. Sinha ◽  
Qing‐Huo Liu ◽  
Thomas J. Plona ◽  
Kenneth W. Winkler
Keyword(s):  
Wave Propagation ◽  
Finite Difference ◽  
Finite Difference Formulation

Study on Lateral Dynamic Response of Pile Foundation in Liquefiable Soil by Using FBG Method

2012 ◽  
Vol 238 ◽  
pp. 337-340 ◽  
Author(s):  
Yu Run Li ◽  
Yan Liang ◽  
Xing Wei ◽  
Yun Long Wang ◽  
Zhen Zhong Cao
Keyword(s):  
Dynamic Response ◽  
Data Acquisition ◽  
Pile Foundation ◽  
Maximum Stress ◽  
Shaking Table Test ◽  
Data Acquisition System ◽  
Seismic Damage ◽  
Shaking Table ◽  
Calculation Methods ◽  
Liquefiable Soil

The study on lateral dynamic response of pile foundation in liquefiable soil is a significant part about seismic damage. In this paper, a new data acquisition system of FBG and calculation methods is used in the small shaking table test. The results show that FBG method used in this test is proved to be efficient and acceptable in both time characteristics and precision characteristics, it may be widely applied in the future doubtlessly. What’s more, the characteristics of p-y curves in different peak accelerations are discussed. And varying of maximum stress and displacement by corresponding acceleration is discussed. A contrast about p-y curve between dry sand and saturate sand is related, which provides a new direction in research about p-y curve.

Optimal Circumferential Placement of Cylindrical Thermocouple Probes for Reduction of Excitation Forces

1992 ◽  
Author(s):  
Eben C. Cobb ◽  
Tsu-Chien Cheu ◽  
Jay Hoffman
Keyword(s):  
Sensitivity Analysis ◽  
Linear Programming ◽  
Finite Difference ◽  
Design Methodology ◽  
Turbine Stage ◽  
Linear Programming Method ◽  
Optimization Scheme ◽  
Forcing Function ◽  
Finite Difference Formulation ◽  
Critical Excitation

This paper presents a design methodology to determine the optimal circumferential placement of cylindrical probes upstream of a turbine stage for reduced excitation forces. The potential flow forcing function generated by the probes is characterized by means of a Fourier analysis. A finite difference formulation is used to evaluate the sensitivity of the forcing function to the probe positions. An optimization scheme, based on the linear programming method, uses the sensitivity analysis results to reposition the probes such that the Fourier amplitudes of critical excitation orders are reduced. The results for an example design situation are presented.

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