Results 51 to 60 of about 8,118 (208)

Study of the influence of initial geometric imperfections on the behavior of semi-rigid steel frames

, 2021
Neste trabalho analisou-se a influência das imperfeições geométricas iniciais na estabilidade de pórticos planos semi-rígidos de aço. Para isso, foi analisado via método dos elementos finitos a introdução das imperfeições geométricas iniciais por meio da
Higaki, Bruno Eizo, Rodrigues, Victor Painçal   +1 more
core   +1 more source

Robust mesh generation for electromagnetic models with geometric defects through node alignment and mesh boolean operations

Scientific Reports
This paper presents a mesh fault-tolerant repair algorithm tailored to address common geometric issues inherent in electromagnetic models. During the actual production design phase, electromagnetic models frequently display a variety of geometric ...
Z. H. Gao, Fei Yu, Jie Cao, Xin Yang, J. H. Xie, Z. Q. Guan   +5 more
doaj   +1 more source

Automated linear buckling analysis of space frame structures

Results in Engineering
This article presents a streamlined procedure for assessing the capacity of space frame structures by incorporating geometric (stress) stiffness directly into the structural analysis.
Munib Sarwar, Bjørn Melhus
doaj   +1 more source

Comprehensive Study on Underslung Girder Bridge under Different Loading Conditions

The Baltic Journal of Road and Bridge Engineering, 2017
The comprehensive study on the structural behaviour of underslung girder bridge is examined in this study through both numerical modelling and experimental 3D model tests.
Ieva Misiūnaitė, Algirdas Juozapaitis, Alfredas Laurinavičius   +2 more
doaj   +1 more source

Modal localization in vibrations of circular cylindrical shells with geometric imperfections

, 2022
The present study aims to investigate the effect of geometric imperfections in circular cylindrical shells on the vibration characteristics. Perfect circular shells are characterized by the presence of double shell-like modes, i.e., modes having the same
Pellicano F., Zippo A., Iarriccio G., Hemmatnezhad M.   +3 more
core   +1 more source

Effects of plies orientations and initial geometric imperfections on buckling strength of a composite stiffened panel

MATEC Web of Conferences, 2018
The use of composite stiffened panels is common in several activities such as aerospace, marine and civil engineering. The biggest advantage of the composite materials is their high specific strength and stiffness ratios, coupled with weight reduction ...
Feddal Ikram, Khamlichi Abdellatif, Ameziane Koutaiba   +2 more
doaj   +1 more source

Beam-Column In-Plane Resistance Based on the Concept of Equivalent Geometric Imperfections

Archives of Civil Engineering, 2016
Assessment of the flexural buckling resistance of bisymmetrical I-section beam-columns using FEM is widely discussed in the paper with regard to their imperfect model. The concept of equivalent geometric imperfections is applied in compliance with the so-
Giżejowski M.A., Szczerba R.B., Gajewski M.D., Stachura Z.   +3 more
doaj   +1 more source

A quantitative assessment of random field models in finite element buckling analyses of composite cylinders

, 2012
Large scatter characterizes the collapse load of thin-walled structures due to their imperfection sensitivity. Random fields can be used to include imperfections in a finite element model.
Degenhardt, Richard, De Groof, L., Haller, H., Oberguggenberger, M., Kling, Alexander   +4 more
core  

Practical Advanced Design Considering Random Distribution of Initial Geometric Imperfections

, 2011
Current advanced analysis and design of steel frames, allows for the most unfavorable combination of initial imperfections. In fact, however, the initial geometric imperfections and their combinations are all random distributions.
Yaochun Zhang, Jinyou Zhao, Lu Jin, Yongsong Shao   +3 more
core   +1 more source

Numerical methods for the fatigue assessment of welded joints: influence of misalignment and geometric weld imperfections

Engineering Structures and Technologies, 2017
The fatigue design life of welded joints in steel structures is increasingly assessed by using numerical models and methods, such as the structural (hot-spot) stress method and the effective notch stress method.
Andreas Taras, Harald Unterweger
doaj   +1 more source