scholarly journals Numerical Reproducing of a Bifurcation in the Stress Distribution Obtaining Process in Post-Critical Deformation States of Aircraft Load-Bearing Structures

10.5772/48069 ◽  
2012 ◽  
Author(s):  
Tomasz Kopecki
Keyword(s):  
Stress Distribution ◽  
Load Bearing ◽  
Critical Deformation

Study on Load Bearing Performance of Concrete Components Based on FEM

2014 ◽  
Vol 556-562 ◽  
pp. 729-732
Author(s):  
You Yu Wang ◽  
Zh Ping Zhao ◽  
Yan Hui Wang
Keyword(s):  
Stress Distribution ◽  
Strain Distribution ◽  
Concrete Beam ◽  
Ultimate Load ◽  
Neutral Axis ◽  
Ansys Software ◽  
Actual Structure ◽  
Load Bearing ◽  
Yield Load ◽  
Structure Test

In this paper, the anti-bending function of the concrete beam is simulated by using ANSYS software. The simulated quantity include crack loads, yield load, ultimate load, deflection, crack and crush, stress distribution, strain distribution, movement of neutral axis and so on. The simulated model is a actual structure test. As a result, the value of the yield load, the ultimate load, the deflection are consisted with the actual loads .The method may be used on simulation of structure tests, or used in teaching of some colleges.

scholarly journals Experimental Study on Static Performance of Deployable Bridge Based on Cable-Strengthened Scissor Structures

2021 ◽  
Vol 2021 ◽  
pp. 1-11
Author(s):  
Xiaoming Yu ◽  
Yinghua Yang ◽  
Yanxia Ji ◽  
Lin Li
Keyword(s):  
Stress Distribution ◽  
Bearing Capacity ◽  
Three Dimensional ◽  
Bending Moment ◽  
Rapid Expansion ◽  
Load Bearing ◽  
Static Performance ◽  
Storage Rate ◽  
Steel Cables ◽  
High Storage

The deployable bridge based on scissor structures is one of the effective methods to quickly restore traffic after natural and man-made disasters. Scissor structures have the advantages of high storage rate, lightweight, and convenient storage and transportation. However, when scissor structures are used as load-bearing structures, their stiffness and bearing capacity are low. In this study, a three-dimensional deployable bridge based on the cable-strengthened scissor structures was proposed. In addition to rapid expansion, steel cables were used to strengthen scissor structures to improve the stiffness and bearing capacity. Besides, the static loading comparative tests on cable-strengthened scissor structures and traditional scissor structures (cable-free scissor structures) were performed. The results show that the stiffness of the cable-free scissor structure is small, the bending moment of members is large, and the stress distribution is uneven. The stiffness of cable-strengthened scissor structure is significantly improved; the bending moment of members is significantly reduced; and the stress distribution in the member section is more uniform. It is proved that cables can be used to improve the stiffness and load-bearing capacity of scissor structures without affecting the deployability.

scholarly journals Study of load bearing capacity of an infinite sheet weakened by multiple collinear straight cracks with coalesced yield zones

2021 ◽  
Vol 0 (0) ◽  
Author(s):  
S. Shekhar ◽  
Naved Akhtar ◽  
S. Hasan
Keyword(s):  
Stress Intensity ◽  
Stress Distribution ◽  
Analytical Solution ◽  
Bearing Capacity ◽  
Plastic Plate ◽  
Intensity Factors ◽  
Load Bearing Capacity ◽  
Load Bearing ◽  
Yield Zone ◽  
Variable Approach

Abstract This paper is concerned with the analytical solution of a multi-side damage problem. The objective is to investigate the load-bearing capacity of an infinite elastic-plastic plate weakened by three pairs of collinear straight cracks with coalesced yield zones. Stress intensity factors (SIFs) are obtained when yield zones are subjected to three different patterns of yield stress distribution, i. e., constant, linearly, and quadratically varying. Muskhelisvili's complex variable approach is applied for uncovering the solution to this problem. The problem is solved and analyzed rigorously based on Dugdale's hypothesis. The numerical results are deduced for the load-bearing capacity of the plate and yield zone lengths. These results are analyzed and demonstrated graphically for various mechanical loading conditions and different crack lengths.

scholarly journals Effect of the restorative technique on load-bearing capacity, cusp deflection, and stress distribution of endodontically-treated premolars with MOD restoration

2019 ◽  
Vol 44 (3) ◽  
Author(s):  
Daniel Maranha da Rocha ◽  
João Paulo Mendes Tribst ◽  
Pietro Ausiello ◽  
Amanda Maria de Oliveira Dal Piva ◽  
Milena Cerqueira da Rocha ◽  
...  
Keyword(s):  
Stress Distribution ◽  
Bearing Capacity ◽  
Load Bearing Capacity ◽  
Load Bearing

The concerted use of SEM, TEM, and SCM for examination of resin-dentin interfaces

1994 ◽  
Vol 52 ◽  
pp. 476-477
Author(s):  
B. Van Meerbeek ◽  
L. J. Conn ◽  
E. S. Duke
Keyword(s):  
Surface Layer ◽  
Stress Distribution ◽  
Phosphoric Acid ◽  
Bonding Mechanism ◽  
Restorative Dentistry ◽  
Dental Adhesive ◽  
Low Viscosity ◽  
Dentin Adhesives ◽  
Acid Etch ◽  
Tooth Tissue

Restoration of decayed teeth with tooth-colored materials that can be bonded to tooth tissue has been a highly desirable property in restorative dentistry for many years. Advantages of such an adhesive restorative technique over conventional techniques using non-adhesive metal-based restoratives include improved restoration retention with minimal sacrifice of sound tooth tissue for retention purposes, superior adaptation and sealing of the restoration margins in prevention of caries recurrence, improved stress distribution across the tooth-restoration interface throughout the whole tooth, and even reinforcement of weakened tooth structures. The dental adhesive technology is rapidly changing. An efficient resin bond to enamel has already long been achieved. Its bonding mechanism has been fully elucidated and has proven to be a durable and reliable clinical treatment. However, bonding to dentin represents a greater challenge. After the failures of a dentin acid-etch technique in imitation of the enamel phosphoric-acid-etch technique and a bonding procedure based on chemical adhesion, modern dentin adhesives are currently believed to bond to dentin by a micromechanical hybridization process. This process is developed by an initial demineralization of the dentin surface layer with acid etchants exposing a collagen fibril arrangement with interfibrillar microporosities that subsequently become impregnated by low-viscosity monomers. Although the development of such a hybridization process has well been documented in the literature, questions remain with respect to parameters of-primary importance to adhesive efficacy.

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