Dynamic Analysis of Frame Container Wharf Subjected to Multi-Support Excitation

2011 ◽  
Vol 90-93 ◽  
pp. 3239-3242
Author(s):  
Ming Qiang Xia ◽  
Hong Yu Jia ◽  
Shi Xiong Zheng
Keyword(s):  
Structural Response ◽  
Internal Force ◽  
Response Analysis ◽  
Dynamic Force ◽  
Detailed Calculation ◽  
Force Response ◽  
Dynamic Displacement ◽  
Analysis Of Results ◽  
Support Excitation ◽  
Design Experience

Detailed calculation of the dynamic displacement and dynamic internal force response of each structual member of wharf structure in the earthquake are conducted to structural response analysis of finite element numerical model in the Cuntan container wharf under multi-support excitations(MSE). The comparative analysis of results of calculation evaluates the characteristics of the whole dynamic force of the structure , validates and optimizes engineering design and accumulates design experience, simultaneously,in order to further master performance states of container wharf and the application of an advanced type wharf to other regions.

Numerical Simulation of Random Wind-Excited Response Analysis of Henan TV Tower

2011 ◽  
Vol 147 ◽  
pp. 298-302
Author(s):  
Yong Zeng ◽  
Hong Mei Tan
Keyword(s):  
Numerical Simulation ◽  
Dynamic Response ◽  
Wind Velocity ◽  
Response Analysis ◽  
Load Factor ◽  
Response Force ◽  
Velocity Spectrum ◽  
Force Response ◽  
Ansys Software ◽  
Acceleration Response

Based on wind velocity spectrum generated by CAWS method, the dynamic response of tower is computed by Ansys software. The wind-reduced displacement response, force response and acceleration response are acquired. At the same time, wind load factor based on displacement equivalence and force equivalence is acquired.

scholarly journals Dynamic Response Analysis of a Multiple Square Loops-String Dome under Seismic Excitation

Symmetry ◽  
2021 ◽  
Vol 13 (11) ◽  
pp. 2062
Author(s):  
Zhenwei Lin ◽  
Chao Zhang ◽  
Jucan Dong ◽  
Jianliang Ou ◽  
Li Yu
Keyword(s):  
Dynamic Response ◽  
Time History ◽  
Element Model ◽  
Internal Force ◽  
Seismic Excitation ◽  
Response Analysis ◽  
Seismic Structure ◽  
Force Response ◽  
Structural Dynamic ◽  
Seismic Arrays

The interaction between multiple loops and string cables complicates the dynamic response of triple square loops-string dome structures under seismic excitation. The internal connection between the multiple square loops-string cables and the grid beams was studies to provide a favorable reference for an anti-seismic structure. With a finite element model of the Fuzhou Strait Olympic Sports Center Gymnasium, established by SAP2000 software, the structural dynamic characteristic parameters were obtained first, and then this study adopted a time-history analysis method to study the internal force response of the cables and the roof grid beams of the multiple square loops-string dome (MSLSD) under three types of seismic array excitation. The influence of two factors, namely the seismic pulse and the near and far seismic fields, on the dynamic response of this structure was analyzed by three groups of different types of seismic excitation (PNF, NNF, PFF). As shown from the results, the first three-order vibration modes were torsional deformations caused by cables, the last five were mainly the overall roof plane vibration and antisymmetric vibration. Under the excitation of the three seismic arrays, the internal force responses of stay cables, square cables in the outer ring and the string cables were largest, while the maximum internal force response of the struts changed with the direction of seismic excitation. The largest internal force response of the roof grid beams occurred in local components such as BX3, BX7 and BY7, and the largest deformation of the beam nodes occurred in JX7, JX12 and JY4. In general, the seismic pulse and the near seismic field weakened the internal force response of the struts and cables but increased the internal force response and deformation of the dome beams, while the near and far seismic fields outweighed the seismic pulse. All the above provides an important reference for structural monitoring and seismic resistance.

Dynamic Force Response Analysis on Parallel Pre-stressed Six-axis Force Sensor

ROBOT ◽  
2011 ◽  
Vol 33 (4) ◽  
pp. 455-460 ◽  
Author(s):  
Zhijun WANG ◽  
Jiantao YAO ◽  
Hang WANG ◽  
Yulei HOU ◽  
Yongsheng ZHAO
Keyword(s):  
Force Sensor ◽  
Response Analysis ◽  
Dynamic Force ◽  
Force Response

Cable Angle and Minimum Resultant Force Response Analysis of Lower Limb Traction Device for Rehabilitation Robot With Interval Parameters

2020 ◽  
Vol 21 (2) ◽  
Author(s):  
Yuan Li ◽  
Bin Zi ◽  
Bin Zhou ◽  
Ping Zhao ◽  
Q.J. Ge
Keyword(s):  
Lower Limb ◽  
Resultant Force ◽  
Response Analysis ◽  
Rehabilitation Robot ◽  
Order Interval ◽  
Force Response ◽  
Interval Parameters ◽  
First Order ◽  
Traction Device ◽  
Domain Prediction

Abstract This paper proposes a hybrid uncertainty analysis method (HUAM) based on the first-order interval perturbation method (FIPM) and Monte Carlo method (MCM) for minimum resultant force response analysis of the lower limb traction device (LLTD) of a hybrid-driven parallel waist rehabilitation robot (HDPWRR) with interval parameters. Based on the analysis of cable angles by using the interval algorithm, the problem of non-uniqueness of the force solution in redundant constraint mechanisms is solved. The force response domain prediction with interval parameters on rehabilitation patients is estimated by using the HUAM which combining the first-order interval perturbation technique with direct Monte Carlo method in different stages, and it reduces the calculation amount. First, the kinematic and static models of the LLTD with deterministic information are established according to its work principle. Then, the interval matrices with interval parameters are calculated by using the FIPM and the response of cable angles is combined with the static model. Third, by numerical examples, the accuracy and efficiency of the HUAM for solving the force response domain problem with interval parameters are verified. The bounds of cable angle response domain of the interval LLTD model are determined. Finally, the minimum resultant force response domain prediction with interval parameters on rehabilitation patients is estimated by combining the FIPM and MCM.

scholarly journals The Effect of Environmental Contour Selection on Expected Wave Energy Converter Response

2018 ◽  
Vol 141 (1) ◽  
Author(s):  
Samuel J. Edwards ◽  
Ryan G. Coe
Keyword(s):  
Wave Energy ◽  
Reference Model ◽  
Wave Energy Converter ◽  
Contour Method ◽  
Response Analysis ◽  
Extreme Conditions ◽  
Force Response ◽  
Energy Converter ◽  
Extreme Response ◽  
Insight Into

A wave energy converter must be designed to both maximize power production and to ensure survivability, which requires the prediction of future sea states. It follows that precision in the prediction of those sea states should be important in determining a final WEC design. One common method used to estimate extreme conditions employs environmental contours of extreme conditions. This report compares five environmental contour methods and their repercussions on the response analysis of Reference Model 3 (RM3). The most extreme power take-off (PTO) force is predicted for the RM3 via each contour and compared to identify the potential difference in WEC response due to contour selection. The analysis provides insight into the relative performance of each of the contour methods and demonstrates the importance of an environmental contour in predicting extreme response. Ideally, over-predictions should be avoided, as they can add to device cost. At the same time, any “exceedances,” that is to say sea states that exceed predictions of the contour, should be avoided so that the device does not fail. For the extreme PTO force response studied here, relatively little sensitivity to the contour method is shown due to the collocation of the device's resonance with a region of agreement between the contours. However, looking at the level of observed exceedances for each contour may still give a higher level of confidence to some methods.

A Dose-Response Analysis of Nicotine Sensitization in Adolescent Rats D2-Primed as Neonates

2010 ◽  
Author(s):  
Elizabeth A. Hanchak ◽  
Meredith L. Smith ◽  
Jessie J. Smith ◽  
Marla K. Perna ◽  
Russell W. Brown
Keyword(s):  
Dose Response ◽  
Response Analysis ◽  
Adolescent Rats
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