Sensitive Analysis of Factors Affecting Soil Slope Stability

2012 ◽  
Vol 170-173 ◽  
pp. 1072-1075
Author(s):  
Yong Chun Cheng ◽  
Ping Jiang
Keyword(s):  
Sensitivity Analysis ◽  
Slope Stability ◽  
Influence Factor ◽  
Influence Factors ◽  
Analysis Method ◽  
Factors Affecting ◽  
Safety Coefficient ◽  
Analysis Process ◽  
Sensitivity Analysis Method ◽  
Slope Design

In order to get better calculation parameters for slope stability analysis, as well as provide a better theoretical basis for slope design and reinforcement. In this paper, based on the single factor sensitivity analysis method, the finite difference strength reduction method was taken to calculate the slope safety coefficient when influence factors change. Sensitivity analysis process was explained through a numerical example, the calculation result shows that, influence factor sensitivity of slope stability is related to the value of influence factor.

Efficient Sensitivity Analysis for Multibody Dynamics Systems Using an Iterative Steps Method With Application in Topology Optimization

2011 ◽  
Author(s):  
Guang Dong ◽  
Zheng-Dong Ma ◽  
Gregory Hulbert ◽  
Noboru Kikuchi ◽  
Sudhakar Arepally ◽  
...  
Keyword(s):  
Sensitivity Analysis ◽  
Topology Optimization ◽  
Multibody Dynamics ◽  
Optimization Problem ◽  
Finite Difference Methods ◽  
Analysis Method ◽  
Topology Optimization Problem ◽  
Design Variables ◽  
Sensitivity Analysis Method ◽  
Rotational Motions

Efficient and reliable sensitivity analyses are critical for topology optimization, especially for multibody dynamics systems, because of the large number of design variables and the complexities and expense in solving the state equations. This research addresses a general and efficient sensitivity analysis method for topology optimization with design objectives associated with time dependent dynamics responses of multibody dynamics systems that include nonlinear geometric effects associated with large translational and rotational motions. An iterative sensitivity analysis relation is proposed, based on typical finite difference methods for the differential algebraic equations (DAEs). These iterative equations can be simplified for specific cases to obtain more efficient sensitivity analysis methods. Since finite difference methods are general and widely used, the iterative sensitivity analysis is also applicable to various numerical solution approaches. The proposed sensitivity analysis method is demonstrated using a truss structure topology optimization problem with consideration of the dynamic response including large translational and rotational motions. The topology optimization problem of the general truss structure is formulated using the SIMP (Simply Isotropic Material with Penalization) assumption for the design variables associated with each truss member. It is shown that the proposed iterative steps sensitivity analysis method is both reliable and efficient.

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