KBES for Finite Element Analysis: State of the Art and Future Directions

2009 ◽  
Author(s):  
S. Kalaga ◽  
C.S. Krishnamoorthy
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
State Of The Art ◽  
Element Analysis ◽  
Future Directions

Advancement in the Application of Finite Element Analysis to the Optimization of Composite Yacht Structures

2011 ◽  
Author(s):  
David Fornaro
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Composite Structures ◽  
State Of The Art ◽  
Load Case ◽  
Post Processing ◽  
Principal Stresses ◽  
Element Analysis ◽  
Current State ◽  
Case Development

Finite Element Analysis (FEA) is mature technology that has been in use for several decades as a tool to optimize structures for a wide variety of applications. Its application to composite structures is not new, however the technology for modeling and analyzing the behavior of composite structures continues to evolve on several fronts. This paper provides a review of the current state-of-the-art with regard to composites FEA, with a particular emphasis on applications to yacht structures. Topics covered are divided into three categories: Pre-processing; Postprocessing; and Non-linear Solutions. Pre-processing topics include meshing, ply properties, laminate definitions, element orientations, global ply tracking and load case development. Post-processing topics include principal stresses, failure indices and strength ratios. Nonlinear solution topics include progressive ply failure. Examples are included to highlight the application of advanced finite element analysis methodologies to the optimization of composite yacht structures.

scholarly journals Long, elliptically bent, active X-ray mirrors with slope errors <200 nrad

2017 ◽  
Vol 24 (3) ◽  
pp. 615-621 ◽  
Author(s):  
Ioana T. Nistea ◽  
Simon G. Alcock ◽  
Paw Kristiansen ◽  
Adam Young
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Free Electron Laser ◽  
State Of The Art ◽  
Optical Metrology ◽  
Optical Surface ◽  
High Quality ◽  
Element Analysis ◽  
Bending Performance ◽  
X Ray

Actively bent X-ray mirrors are important components of many synchrotron and X-ray free-electron laser beamlines. A high-quality optical surface and good bending performance are essential to ensure that the X-ray beam is accurately focused. Two elliptically bent X-ray mirror systems from FMB Oxford were characterized in the optical metrology laboratory at Diamond Light Source. A comparison of Diamond-NOM slope profilometry and finite-element analysis is presented to investigate how the 900 mm-long mirrors sag under gravity, and how this deformation can be adequately compensated using a single, spring-loaded compensator. It is shown that two independent mechanical actuators can accurately bend the trapezoidal substrates to a range of elliptical profiles. State-of-the-art residual slope errors of <200 nrad r.m.s. are achieved over the entire elliptical bending range. High levels of bending repeatability (ΔR/R = 0.085% and 0.156% r.m.s. for the two bending directions) and stability over 24 h (ΔR/R = 0.07% r.m.s.) provide reliable beamline performance.

Review of Existing Repeatable Vehicle Rollover Dynamic Physical Testing Methods

2008 ◽  
Author(s):  
Keith Friedman ◽  
John Hutchinson
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
State Of The Art ◽  
Performance Testing ◽  
Finite Element Models ◽  
Testing Methods ◽  
Reference Test ◽  
Element Analysis ◽  
Physical Testing ◽  
Vehicle Rollover

Two repeatable dynamic rollover performance testing systems have been demonstrated and reported upon. Here a review of each system is presented in which the general characteristics of each system are discussed. To assess how the results obtained from the two systems would compare, finite element models of rollover tests characterizing the two design approaches were utilized. The results from a published rollover test using one of the systems was utilized as a reference test. For each system, the vehicle rollover impacts were simulated under the same initial impact conditions. The results of the simulations were then compared. It was found that the simulations for both hardware systems produced results that were consistent with each other using state-of-the-art finite element analysis tools.

scholarly journals Finite element analysis of the cranium: Validity, sensitivity and future directions

2017 ◽  
Vol 16 (5-6) ◽  
pp. 600-612 ◽  
Author(s):  
Ricardo Miguel Godinho ◽  
Viviana Toro-Ibacache ◽  
Laura C. Fitton ◽  
Paul O’Higgins
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Element Analysis ◽  
Future Directions

scholarly journals The Applications of Finite Element Analysis in Proximal Humeral Fractures

2017 ◽  
Vol 2017 ◽  
pp. 1-9 ◽  
Author(s):  
Yongyu Ye ◽  
Wei You ◽  
Weimin Zhu ◽  
Jiaming Cui ◽  
Kang Chen ◽  
...  
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Glenohumeral Joint ◽  
State Of The Art ◽  
Review Article ◽  
Proximal Humeral Fractures ◽  
Humeral Fractures ◽  
Noninvasive Method ◽  
Element Analysis ◽  
Geriatric Population

Proximal humeral fractures are common and most challenging, due to the complexity of the glenohumeral joint, especially in the geriatric population with impacted fractures, that the development of implants continues because currently the problems with their fixation are not solved. Pre-, intra-, and postoperative assessments are crucial in management of those patients. Finite element analysis, as one of the valuable tools, has been implemented as an effective and noninvasive method to analyze proximal humeral fractures, providing solid evidence for management of troublesome patients. However, no review article about the applications and effects of finite element analysis in assessing proximal humeral fractures has been reported yet. This review article summarized the applications, contribution, and clinical significance of finite element analysis in assessing proximal humeral fractures. Furthermore, the limitations of finite element analysis, the difficulties of more realistic simulation, and the validation and also the creation of validated FE models were discussed. We concluded that although some advancements in proximal humeral fractures researches have been made by using finite element analysis, utility of this powerful tool for routine clinical management and adequate simulation requires more state-of-the-art studies to provide evidence and bases.

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