Deformation Analysis of Simple-Shear Sheet Specimens

1995 ◽  
Vol 117 (3) ◽  
pp. 269-277 ◽  
Author(s):  
Fuh-Kuo Chen
Keyword(s):  
Finite Element ◽  
Shear Deformation ◽  
Shear Zone ◽  
Simple Shear ◽  
Pure Shear ◽  
Deformation Analysis ◽  
Element Analysis ◽  
Shear Properties ◽  
The Finite Element Analysis ◽  
Strength Material

The shear properties of different simple-shear sheet specimens were investigated using the elastic-plastic finite element method. Tension loaded specimens with a shear zone formed at the center area between two transverse slots were adopted to analyze the shear properties of sheet metals under uniaxial tension. Specimens prepared by single material as well as by bonding two different strength materials together were both studied. Since the shear zone could not be kept free from bending stress during loading, the pure shear deformation was not possibly obtained. However, by varying the shape and the location of the slots, an optimum geometry of the shear zone which yields a nearly pure shear deformation in the plastic range was determined through the finite element analysis. The results also revealed when the shear zone was formed by a low strength material which was bonded on each side with a higher strength material, a nearly pure shear deformation could be obtained even in the elastic range.

Thermal Deformation Analysis of Copper Microbridges with Speckle Interferometry and Finite Element

2007 ◽  
Vol 353-358 ◽  
pp. 2871-2874
Author(s):  
Zhao Zhang ◽  
Xi De Li ◽  
Wen Shen
Keyword(s):  
Finite Element ◽  
Thermal Deformation ◽  
Thermal Loading ◽  
Speckle Interferometry ◽  
Deformation Analysis ◽  
Testing System ◽  
Element Analysis ◽  
Digital Thermometer ◽  
The Finite Element Analysis ◽  
Different Dimensions

In this paper, a speckle microinterferometric system was employed to study the thermal deformation of the Cu microbridges with different dimensions. The deflections of the microbridges caused by the thermal loading were measured with real-time by the speckle microinterferometric system and the surface temperatures of the bridges were recorded using a digital thermometer. The deformation evaluation after microbridges buckling was also recorded with our testing system. Then, the experimental results were compared with the finite element analysis (FEA).

The Finite Element Analysis of the Excavation on Adjacent Buildings Based on Mohr Coulomb Model

2011 ◽  
Vol 374-377 ◽  
pp. 2171-2175 ◽  
Author(s):  
Dong Dong Zhang ◽  
Jun Feng Zhou ◽  
Wei Guo Zhang ◽  
Cheng Bing Zhu ◽  
Rui Rui Sun ◽  
...  
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Deformation Analysis ◽  
Good Prediction ◽  
Deep Excavation ◽  
Element Analysis ◽  
Adjacent Buildings ◽  
The Finite Element Analysis ◽  
Coulomb Model ◽  
Design And Practice

The design and practice of a deep excavation in shanghai was presented. The FEM based on Mohr coulomb Model was adopted to analyze the deformation of the excavation and its effect on adjacent buildings. This method gives good prediction of both the deformation of the soil retaining structures and the settlement of the soils behind the wall after comparing with measured datas. Meanwhile, the method is suitable to deformation analysis of sensitive environment circumstance.

The Strength and Deformation Analysis on the Top Steel-Tube Truss Supporting System of Silo

2013 ◽  
Vol 351-352 ◽  
pp. 760-764
Author(s):  
Tie Cheng Wang ◽  
Wen Xing Wang ◽  
Hai Long Zhao ◽  
Qin Shan Li
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Vertical Displacement ◽  
Steel Tube ◽  
Deformation Analysis ◽  
Element Analysis ◽  
Supporting System ◽  
The Finite Element Analysis ◽  
Strength And Deformation ◽  
Maximal Displacement

The influence of diameters and loads on the displacement of truss supporting system is evaluated based on the results of the finite element analysis on the steel-tube truss supporting system of silo. The vertical displacement increases with the increasing of the load. The displacement increases with the increasing of the diameter in the same loads. The maximal displacement appears in the intermediate position of the truss, and the displacements of symmetric nodes are similar under the symmetric loads. The member yields before 30m of truss supporting system reaches the allowable deflection.

Kinematics of rock flow in a crustal-scale shear zone: implication for the orogenic evolution of the southwestern Hellenides

2000 ◽  
Vol 137 (1) ◽  
pp. 81-96 ◽  
Author(s):  
P. XYPOLIAS ◽  
T. DOUTSOS
Keyword(s):  
Shear Deformation ◽  
Shear Zone ◽  
Simple Shear ◽  
Root Zone ◽  
Pure Shear ◽  
Thrust Belt ◽  
The West ◽  
Simple Shear Deformation ◽  
Tectonic Extrusion ◽  
Scale Shear

Combined shear-sense criteria, finite-strain data and vorticity analyses were used to study the deformation path in a curved crustal-scale shear zone (Phyllite–Quartzite Series) of the southwestern Hellenides. The results are combined with data on the structural evolution of a cover nappe (Pindos thrust belt) to provide new insights into the orogenic evolution of this region.Ductile deformation within the Phyllite–Quartzite Series was associated with a top-to-the-west-southwest shearing and was partitioned into two structural domains: a root zone and a frontal domain. The root zone is characterized by vertical coaxial stretching, high strain and upward movement of the material, while the frontal domain comprises simple-shear deformation at the base and pure shear at the top. This pattern suggests superposition of pure shear on simple-shear deformation, and implies tectonic extrusion of the material from the root zone.The initiation of brittle deformation in the Pindos thrust belt was associated with westward translation above the sub-horizontal Pindos Thrust. Later, as the mountain range elevated, normal faulting at high altitudes and migration of thrusting to the west occurred, while east-directed folding and thrusting in the belt started to the east.According to the proposed model, crustal thickening was taking place throughout the Oligocene and early Miocene, including the subduction of the Apulian beneath the Pelagonian microcontinent and the intracontinental subduction of the Phyllite–Quartzite Series. During the lower Miocene, vertical buoyancy forces led to the successive steepening of the shear zone and the simultaneous duplexing of its basement, facilitating tectonic extrusion of the material from its root zone. Finally, an indentation process caused vertical expulsion of the orogenic wedge and gravity collapse in the brittle crust.

scholarly journals Constrictional deformation of the Koster dyke swarm in a ductile sinistral shear zone, Koster islands, SW Sweden

1985 ◽  
Vol 34 ◽  
pp. 151-197
Author(s):  
Bjorn Hageskov
Keyword(s):  
Shear Deformation ◽  
Shear Zone ◽  
Simple Shear ◽  
Pure Shear ◽  
Dyke Swarm ◽  
Tectonic Event ◽  
Dyke Rock ◽  
Strain Ellipsoid ◽  
Shear Component ◽  
The Baltic

The Koster-Kattsund dyke swarm is an important element in the Sveconorwegian province of the Baltic shield. Dyke intrusion took place in the period 1225-1015 Ma. Throughout most of the swarm the dykes are strongly deformed and thoroughly recrystallised into lineated amphibolites as a result of a Sveconor- wegian tectonic event about 1000 Ma ago. However, in the Koster archipelago fresh dolerites can be fol­lowed northwards in to partially recrystallised metadolerites and finally into the totally recrystallised, line­ated amphibolites that characterise the swarm. In the Koster archipelago intense dyking resulted in the formation of a multilayered rock sandwich con­sisting of alternating layers of gneiss and dolerite. The sandwich trends NNE and dips 67°W. The dolerite dykes have a mean thickness of2.2 m and they occupy 15-20% of the total rock mass. To the northeast the sandwich becomes progressively deformed and ultimately shows very high strain of pure constrictional type. The deformation took place in a steep NW-SE-trending ductile shear zone. During the initial shear zone deformation (D4,) the sandwich underwent anticlockwise bending and the large Kyrkosund synform was formed. The fold plunges 303/66 and has a NW-SE-trending axial surface. The bending took place by means of flexural-slip folding in which the layer-parallel shearing was located in incompetent dyke layers. Increasing shearing and recrystallisation in a NW-SE-trending belt crossing the northern limb of the Kyr­kosund synform resulted in a softening of this belt. The succeeding event (D4b) was localised in this initial soft belt, and involved sinistral simple shear combined with pure shear resulting in horizontal widening and vertical shortening of the belt. This composite deformation formed the pure constrictional fabric now seen in the rocks. The strong D4b stretching was followed by the formation of trains of asymmetric folds (D 4c and d4a). It is demonstrated that volume changes in the dyke rock during deformation were negligible, and that no competence contrast between gneiss and dyke rock existed during the D 4b stretching. The finite con­strictional strain ellipsoid has the dimensions X = 7.07, Y = Z = 0.18. The composite simple/pure shear deformation that presumably caused the constriction has a simple shear component y = 10.9, correspond­ing to an angular shear of 84. 7°. The pure shear deformation resulted in a 3.4 times horizontal widening of the initial soft belt. The horizontal sinistral displacement within the shear zone was at least 35 km.

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