Numerical Simulation on the Overall Dynamic Response of One High-Rise Steel Frame

2012 ◽  
Vol 204-208 ◽  
pp. 1215-1219
Author(s):  
Dai Guo Chen ◽  
Yong Yao ◽  
Hai Jun Wang ◽  
Yong Jun Deng ◽  
Jing Zhou
Keyword(s):  
Dynamic Response ◽  
Spectrum Analysis ◽  
Time History ◽  
Time History Analysis ◽  
Steel Frame ◽  
Mode Analysis ◽  
Seismic Action ◽  
Modal Shape ◽  
High Rise ◽  
History Analysis

Using the finite element analysis software ANSYS to analyze the overall dynamic response of one specific high-rise steel-frame,including modal analysis, spectrum analysis and time-history analysis. Then do a comparative analysis with the results of calculation by the professional software PKPM. As the results: the structural calculation can use layer model; Larger mutations appeared in the stress of weak-story and the relevant story need to reinforce or set up supports under the anti-seismic design in the elastic time-history analysis of structure; Y-direction translation is preferentially happened in first order modal shape and lateral-torsional coupling happened in third order modal shape among the vibration mode analysis; The response spectrum analysis of frequent earthquake show that seismic action is more serious in ground layer.

Analysis of Dynamic Response of a Railway Locomotive Using ANSYS

2021 ◽  
Vol 13 (2) ◽  
Author(s):  
Srihari Palli ◽  
Raghuveer Dontikurti ◽  
Rakesh Chandmal Sharma ◽  
Neeraj Sharma
Keyword(s):  
Dynamic Response ◽  
Time History ◽  
Time History Analysis ◽  
Surface Irregularity ◽  
Transient Dynamic Analysis ◽  
Element Analysis ◽  
Car Body ◽  
History Analysis ◽  
Track Surface ◽  
General Time

Transient dynamic analysis (sometimes called time-history analysis) is a technique used to determine the dynamic response of a structure under the action of any general time-dependent loads. The time scale of the loading is such that the inertia or damping effects are considered to be important. Present work is focused on performing the time history analysis of a typical locomotive coach using finite element analysis in Indian railroad conditions. Track surface irregularity in the form of an ellipsoidal bump is modelled with assumptions that the vehicle passes over the bump in 0.144 seconds, variation in displacement at different key locations of the truck and car body models is plotted against time under standard loading conditions. The response pattern of the front and rear portions of the locomotive truck and car body indicate that these locations are more susceptible to wheel excitations compared to that of the centre portions of it as they are away from the centre of gravity of the vehicle due to unbalanced mass distribution.

Seismic Behavior of Shifang Telecom Building under Conventional Earthquakes

2010 ◽  
Vol 163-167 ◽  
pp. 4227-4231
Author(s):  
Xiao Hu ◽  
Yong Tao Gao
Keyword(s):  
Numerical Simulation ◽  
Spectrum Analysis ◽  
Seismic Behavior ◽  
Time History ◽  
Internal Force ◽  
Seismic Effect ◽  
Time History Analysis ◽  
History Analysis ◽  
Seismic Impact

To study the seismic behavior under conventional earthquakes, according to a case of Shifang Telecom Building (STB) under 5.12 earthquake, this paper makes the computation of internal force and deformation of structure; then compares the seismic behavior of two different models with spectrum analysis and time-history analysis. The conclusion shows that STB can approximately meet requirements for fortification against seismic impact under conventional earthquakes; the steel tower on top can amplify the seismic effect indeed and the weakness of numerical simulation tallies with the reality.

Dynamic Nonlinear Analysis of an Out-of-Code Highrise Building

2012 ◽  
Vol 594-597 ◽  
pp. 860-868
Author(s):  
Kai Hu ◽  
Ge Qu
Keyword(s):  
Nonlinear Analysis ◽  
Seismic Performance ◽  
Spectrum Analysis ◽  
Response Spectrum ◽  
Pushover Analysis ◽  
Time History ◽  
Response Spectrum Analysis ◽  
High Rise ◽  
History Analysis ◽  
Dynamic Nonlinear Analysis

The most common analysis methods of complex high-rise buildings are the response spectrum analysis, elastic time history analysis, pushover analysis and etc. Meanwhile, for the analysis of those high-rises whose height is higher than 200 meters, period is longer than 4 seconds, the dynamic nonlinear analysis would be more accurate. In this paper, the dynamic nonlinear analysis was executed in use of the Perform-3D program. The results show that the maximum top displacement can meet the national codes; most tie beams and the frame beams of the upper structure yielded in the IO~IS stage and parts reached the CP stage; both the laminated columns and the frame columns had a good performance on the shear behavior; and it is also proposed to strengthen the reinforcement at the reducted storeys. By all these above, it can be judged that the structure reached the codes’ seismic performance objectives.

scholarly journals Dynamic Response of Symmetric and Asymmetric Setback Buildings

2020 ◽  
Vol 9 (4) ◽  
pp. 3179-3183
Keyword(s):  
Dynamic Response ◽  
Transverse Direction ◽  
Dynamic Behaviour ◽  
Time History ◽  
Longitudinal Direction ◽  
Time History Analysis ◽  
Seismic Excitations ◽  
Numerical Studies ◽  
History Analysis ◽  
Codal Provisions

Numerical studies have been carried out to study the dynamic behaviour of a five-storey regular building, symmetric setback and asymmetric setback buildings having three bays along longitudinal direction and one bay along transverse direction. The objective of the study is to compare the irregularity indices with respect to different codal provisions such as IS:1893-2016, Euro Code 8-2004 and ASCE 7.05-2005 as well as with the expressions proposed by Karavasilis et al. (2008), and Pradip sarkar et al.(2010). These buildings are subjected to seismic excitations with time history analysis and the response parameters such as fundamental period of vibration of the structures, displacements and storey drifts were evaluated

Numerical investigation on dynamic response of a steel lattice tower under various seismic events

2019 ◽  
Author(s):  
Tomasz Falborsk ◽  
Natalia Lasowicz
Keyword(s):  
Dynamic Response ◽  
Soil Structure ◽  
Numerical Study ◽  
Soft Soil ◽  
Time History ◽  
Time History Analysis ◽  
Modal Parameters ◽  
History Analysis ◽  
Lattice Tower ◽  
Ground Motion Records

The present paper presents the results of the numerical study designed to investigate the soil-structure flexibility effects on modal parameters (i.e. fundamental frequencies) and time-history analysis response (represented by the top relative displacements) of a 46.8 m high steel lattice tower subjected to a number of ground motions including also one mining tremor. In addition to the fixed-base condition, three different soil types (i.e. dense soil, stiff soil, and soft soil) were considered in this investigation. Site conditions were characterized by their average effective profile velocities, Poisson’s ratios, and finally mass densities. Soil-foundation flexibility was introduced using the spring-based approach, utilizing foundation springs and dashpots. The first step was to investigate the influence of different base conditions on modal parameters of the steel lattice tower. In the final part of the current study time-history analysis was performed using different two-component ground motion records (in two horizontal, mutually perpendicular directions). The results obtained indicate that modal parameters and dynamic response of the structure may be considerably affected by the soil-structure interaction effects. Therefore, the present paper confirms the necessity of utilizing soil-flexibility into numerical research.

Time-History Analysis of the High-Rise Building Structure Based on ANSYS

2011 ◽  
Vol 71-78 ◽  
pp. 2836-2839
Author(s):  
Hui Xia Xiong ◽  
Chang Yong Wang
Keyword(s):  
Structural Design ◽  
Time History ◽  
Time History Analysis ◽  
Building Structure ◽  
Finite Element Program ◽  
High Rise ◽  
High Rise Building ◽  
History Analysis ◽  
Earthquake Load ◽  
Element Program

The dynamic property of a high-rise building structure and time-history analysis under earthquake were analyzed by using the finite element program ANSYS. A modal analysis of the tower was conducted and the first 20 frequencies and modal shapes were obtained. The displacements and inner force under the earthquake were calculated. The result showed that the structural stiffness was enough to sustain earthquake load; and the stiffness distributed equally. These results can provide reliable basis for structural design.

scholarly journals Dynamic Performance Analysis of Steel Frame Structure under Seismic Action

2019 ◽  
Vol 2 (2) ◽  
pp. 1
Author(s):  
Xiaojun Yuan ◽  
Yanmu Qu ◽  
Jinlong Liu ◽  
Kailin Wei ◽  
Haifeng Zong
Keyword(s):  
Dynamic Performance ◽  
Time History ◽  
Steel Frame ◽  
Frame Structure ◽  
Seismic Action ◽  
Element Analysis ◽  
History Analysis ◽  
Dynamic Time ◽  
Steel Frame Structure ◽  
Dynamic Performance Analysis

In order to find out the dynamic characteristics of a steel frame structure project in the 8 degree (0.3g) area, the artificial wave, Taft wave and El Centro wave were input by using the finite element analysis software ANSYS. The dynamic time-history analysis of the structure shows the dynamic performance of the structure under the frequent earthquakes and rare earthquakes.

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