High Fidelity Structural Analysis for Undergrad Structural Engineering Students

2018 ◽  
Author(s):  
Aaron Freidenberg ◽  
Jakob C. Bruhl ◽  
Christopher H. Conley ◽  
Charles L. Randow
Keyword(s):  
Structural Analysis ◽  
Structural Engineering ◽  
Engineering Students ◽  
High Fidelity

scholarly journals Identification of fidelity-governing factors in human recombinases DMC1 and RAD51 from cryo-EM structures

2021 ◽  
Vol 12 (1) ◽  
Author(s):  
Shih-Chi Luo ◽  
Hsin-Yi Yeh ◽  
Wei-Hsuan Lan ◽  
Yi-Min Wu ◽  
Cheng-Han Yang ◽  
...  
Keyword(s):  
Functional Analysis ◽  
Structural Analysis ◽  
Md Simulation ◽  
Structural Basis ◽  
High Fidelity ◽  
Dna Dynamics ◽  
Genomic Integrity ◽  
Mismatched Dna ◽  
Dna Backbone ◽  
Loop 2

AbstractBoth high-fidelity and mismatch-tolerant recombination, catalyzed by RAD51 and DMC1 recombinases, respectively, are indispensable for genomic integrity. Here, we use cryo-EM, MD simulation and functional analysis to elucidate the structural basis for the mismatch tolerance of DMC1. Structural analysis of DMC1 presynaptic and postsynaptic complexes suggested that the lineage-specific Loop 1 Gln244 (Met243 in RAD51) may help stabilize DNA backbone, whereas Loop 2 Pro274 and Gly275 (Val273/Asp274 in RAD51) may provide an open “triplet gate” for mismatch tolerance. In support, DMC1-Q244M displayed marked increase in DNA dynamics, leading to unobservable DNA map. MD simulation showed highly dispersive mismatched DNA ensemble in RAD51 but well-converged DNA in DMC1 and RAD51-V273P/D274G. Replacing Loop 1 or Loop 2 residues in DMC1 with RAD51 counterparts enhanced DMC1 fidelity, while reciprocal mutations in RAD51 attenuated its fidelity. Our results show that three Loop 1/Loop 2 residues jointly enact contrasting fidelities of DNA recombinases.

scholarly journals Using Learning Objects to Teach Structural Engineering

2016 ◽  
Vol 12 (04) ◽  
pp. 14
Author(s):  
Luciano Andreatta-da-Costa
Keyword(s):  
Collaborative Learning ◽  
Prior Knowledge ◽  
Structural Engineering ◽  
Engineering Students ◽  
Theoretical Framework ◽  
Active Participation ◽  
Learning Objects ◽  
Constructivist Learning ◽  
Bending Moments ◽  
Learning Principles

This work explores learning objects - LO, which were developed to teach diagrams of bending moments and shear. From this Flash application, the students can explore mathematic and physical relations simulating different models of beams. The theoretical framework of this work are the constructivist learning principles, as active participation of the student, the importance of a prior knowledge and collaborative learning. This work also shows the using of this LO by engineering students in the course of Isostatic Structures.

High-Fidelity Structural Analysis of a 10 MW Offshore Floating Wind Turbine Rotor Blade

2020 ◽  
Author(s):  
Reza Yaghmaie ◽  
Onur Bilgen
Keyword(s):  
Structural Analysis ◽  
Wind Turbine ◽  
Turbine Blade ◽  
Rotor Blade ◽  
Turbine Rotor ◽  
High Fidelity ◽  
Turbine Rotor Blade ◽  
Offshore Floating Wind Turbine ◽  
Fidelity Model ◽  
Wind Turbine Rotor

Abstract This paper presents a comparison of low- and high-fidelity structural analyses of a 10 MW offshore floating wind turbine rotor blade. For low-fidelity analysis, BeamDyn as a part of the OpenFAST toolset is used. For high-fidelity analysis, the Toolkit for the Analysis of Composite Structures (TACS) finite element method is used. First, several numerical examples with reference solutions from the literature are investigated to compare the accuracy and efficiency of the low- and high-fidelity structural models. Next, the DTU 10 MW reference wind turbine blade is analyzed using both the low- and high-fidelity methods. The bending response of the blade is analyzed. The results show that the high-fidelity model agrees with low-fidelity results and reference solutions. The high-fidelity model represents the deformations more accurately than the low-fidelity model and therefore is appropriate for structural analysis of complex wind turbine blade shapes.

BIM Education for Engineers via Self-Directed, Creative Design

2013 ◽  
Vol 2 (4) ◽  
pp. 65-76 ◽  
Author(s):  
Oliver Kinnane ◽  
Roger West
Keyword(s):  
Structural Engineering ◽  
Engineering Students ◽  
Design Thinking ◽  
Information Modeling ◽  
Traditional Architecture ◽  
Disruptive Technologies ◽  
Curriculum Restructuring ◽  
Building Information ◽  
Engineering Schools

Disruptive technologies have found traction in the construction industry, affecting long established processes and rendering old methods of design communication and construction management increasingly obsolete. Pressure is on traditional Architecture, Engineering and Construction (AEC) schools in academic institutions to respond to this paradigm shift in industry. Common among engineering schools is the necessity to maintain fundamental subjects as approved by accreditation boards. Hence it is difficult to create space for Building Information Modeling (BIM) given a curriculum already packed with established modules. This is a primary reason for the slow uptake of BIM in engineering. For engineering schools the question remains, how best to integrate BIM into the curriculum? This educational case study outlines the introduction of BIM into the curriculum of Civil and Structural Engineering students through an unobtrusive method that does not require curriculum restructuring and does not require module refocus. Two project-based modules, with inherent ‘design thinking' objectives, are adapted to enable BIM tools to be used as design, analysis and communication tools.

An approach for qualitative structural analysis

1993 ◽  
Vol 7 (3) ◽  
pp. 189-207 ◽  
Author(s):  
Renate Fruchter ◽  
Kincho H. Law ◽  
Yumi Iwasaki
Keyword(s):  
Structural Analysis ◽  
Qualitative Analysis ◽  
Structural Engineering ◽  
Qualitative Evaluation ◽  
Partial Ordering ◽  
Design Stage ◽  
Prototype System ◽  
Preliminary Design ◽  
Final Design ◽  
Physical Quantities

In preliminary design, the details of a structure are insufficient to warrant the use of numeric tools traditionally used in structural analysis. However, an accurate prediction of the behavior of a structure and its components in the preliminary design phase can have a significant effect on the final design process in reducing the number of alternative solutions, avoiding the costly design revisions, and improving the quality of design. Presently, there are few tools available for preliminary analysis of structures. This study represents an initial effort towards the development of a tool that can be used in the conceptual design stage to qualitatively evaluate the behavior of a structure.This paper describes a prototype system, QStruc, for qualitative structural analysis, which combines first principles in structural engineering and experiential knowledge of structural behavior. The purposes of QStruc are: (1) to generate qualitative models from the schematics of a structure; and (2) to infer the qualitative response of the structure in terms of deflected shape, moments, and reactions. The qualitative analysis strategy employs: (1) a greedy depth-first approach that tries to expand the derived response as much as possible from known parameter values; (2) a causal ordering mechanism, which enables the system to identify the solution path for the qualitative analysis; (3) qualitative calculus, which enables the qualitative evaluation of the physical quantities of the causal model that describes the behavior of the structure; and (4) Quantity Lattice (Simmons, 1986) which enables the system to reason about partial ordering among physical quantities and to reduce some of the ambiguous conclusions caused by the impreciseness of the information. Examples are provided to illustrate the effectiveness and limitations of the prototype system.

The Plot of Usher: Rebuilding the House of Poe

2018 ◽  
pp. 23-44
Author(s):  
Evert Jan van Leeuwen
Keyword(s):  
Nineteenth Century ◽  
Structural Analysis ◽  
High Fidelity ◽  
Literary Source

This chapter presents a structural analysis of Edgar Allan Poe's story and Richard Matheson's script to highlight House of Usher's (1960) fidelity to Poe's original. ‘The Fall of the House of Usher’ (1839) is often classified as the story that epitomises Poe's philosophy of composition. From the outset, it hurtles towards a dreadful and inescapable catastrophe from which only the narrator escapes to tell the tale. Adapting Poe properly for the screen means following Poe's method of plotting for unity of effect as well as translating the story's atmosphere of doom, hysterical characterisation, and macabre themes of death and decay into a language understandable to actors, cinematographers, and all the various artists involved in the production design. The chapter's analysis shows that Matheson indeed followed Poe's philosophy of composition carefully, adapting the nineteenth-century writer's literary conventions to create a cinematic narrative of high fidelity to its literary source that was also very filmable and appealing to the audience of the day.

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