Numerical simulation and optimization design of acoustic impedance probe

2014 ◽  
Author(s):  
Qiu-ying Chen ◽  
Guo-xuan Lian
Keyword(s):  
Numerical Simulation ◽  
Acoustic Impedance ◽  
Optimization Design ◽  
Simulation And Optimization ◽  
Impedance Probe

scholarly journals Numerical Simulation and Optimization Design of End-Suspended Pile Support for Soil-Rock Composite Foundation Pit

2021 ◽  
Vol 2021 ◽  
pp. 1-15
Author(s):  
Qingchao Xu ◽  
Zhenhao Bao ◽  
Tu Lu ◽  
Huarui Gao ◽  
Jiakang Song
Keyword(s):  
Numerical Simulation ◽  
Optimization Design ◽  
Boundary Effect ◽  
Horizontal Displacement ◽  
Element Model ◽  
Composite Foundation ◽  
Ground Settlement ◽  
Foundation Pit ◽  
Simulation And Optimization ◽  
Geological Conditions

In order to design the soil-rock combination foundation pit more safely and effectively, this paper presents the investigations of the mechanical and deformational characteristics of end-suspended piles supporting the structures in Jinan CBD area. Based on the measured data, a finite element model was established through the two-dimensional numerical simulation method to study the deformational characteristics of the end-suspended piles, and the influences of the depth of socketed rock, the width of rock shoulder, and the prestress of anchor cables on the deformations and mechanical property of end-suspended piles were discussed. Some optimization methods are proposed based on these analyses. Results show the following: (1) Rock-socketed depths have boundary effect on end-suspended piles. Under the given geological conditions, the reasonable socketed ratio is within 0.158∼0.200. (2) The anchor cable prestress can effectively slow down the ground settlement, the force, and deformation of the pile body and can be set to 1P∼1.25P under the conditions of the site. (3) Rock-shoulder width has little influence on the ground settlement and horizontal displacement of piles. The reserved width of rock shoulder is suggested to be selected in the range of 1.0 m∼1.5 m.

Finite Element Analysis and Optimization Design on Single Screw Pump of Offshore Petroleum Well Cementing LADS Device

2014 ◽  
Vol 941-944 ◽  
pp. 2588-2595
Author(s):  
Zhan Xu Wang
Keyword(s):  
Numerical Simulation ◽  
Mathematical Model ◽  
Optimization Design ◽  
Dynamics Analysis ◽  
Model Design ◽  
Element Analysis ◽  
Screw Pump ◽  
Simulation And Optimization ◽  
Single Screw ◽  
Assembly Simulation

The single screw mathematical model is established based on dynamics analysis, and the numerical simulation and optimization design is analyzed. Through the virtual assembly simulation and digital assembly experiments on the single screw, to obtain the compatibility of the improved single screw structure. Thereby, the matching and assembly interference of model design is tested, to optimize the improved single screw compatibility between the stator and rotor.

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