Influence of Processing Parameters on Cobonding-Induced Deformation of Composite Panel with “I”-Shape Stiffener

2015 ◽  
Vol 1089 ◽  
pp. 341-345
Author(s):  
Xue Qin Li ◽  
Zi Long Zhang
Keyword(s):  
Finite Element ◽  
Friction Coefficient ◽  
Finite Element Simulation ◽  
Processing Parameters ◽  
Composite Panel ◽  
Composite Panels ◽  
Consolidation Pressure ◽  
Element Simulation ◽  
Warpage Deformation

Composite panels with “I”-shape stiffeners are widely used, but cobonding process induces large warpage deformation after demoulding. Finite element simulation was used in this paper to analyze the effects of some representative processing parameters on the process-induced deformation. The results show that the deformation increases with the consolidation pressure, the CTE of mould and the friction coefficient. The deformation is more sensitive to the consolidation pressure and the friction coefficient for a shorter part, while it is more sensitive to the CTE of mould for a longer part.

Finite Element Simulation of Effects of Mould Angle and Friction on ECAP for AZ80 Magnesium Alloy

2010 ◽  
Vol 667-669 ◽  
pp. 81-86 ◽  
Author(s):  
Gang Yi Cai ◽  
Xiao Ting Huang ◽  
Shi Xing Zhang
Keyword(s):  
Finite Element ◽  
Magnesium Alloy ◽  
Friction Coefficient ◽  
Finite Element Simulation ◽  
Effective Strain ◽  
Large Angle ◽  
Maximum Load ◽  
Steady Stage ◽  
Element Simulation ◽  
Az80 Magnesium Alloy

Finite element simulation of the effects of mould angle and friction condition on the equal channel angular pressing (ECAP) for AZ80 magnesium alloy were investigated by using DEFORM-3D program. The results show that the curve of load-displacement was divided into several stages including rapid increasing stage, load fluctuation, rapid increasing stage, steady stage and rapid drop stage. Firstly, when the angle decreased from 150°to 90°, the maximum load increased, and the same as energy consuming. In addition, the average effective strain increased with the decreasing of mould angle after single extrusion, while the degree of effective strain uniformity of the sample decreased and keep greater strain grads between inner and surface part. Secondly, the work load ascended with the increasing of the friction coefficient from 0 to 0.3, and one part of load overcome the friction and the other part is used for deformation of the sample. With the increment of friction coefficient, the average effective strain keeps steady value, while the degree of effective strain uniformity of the sample decreased. As mentioned above, large angle mould and low coefficient of friction should be adopted during ECAP deformation for AZ80 magnesium alloy.

scholarly journals Experiment and Numerical Simulation of Wooden Door Frame

2021 ◽  
Vol 2021 ◽  
pp. 1-11
Author(s):  
Eryu Zhu ◽  
Bin Wang ◽  
Dongqi Wei ◽  
Li Zhu
Keyword(s):  
Finite Element ◽  
Friction Coefficient ◽  
Bearing Capacity ◽  
Finite Element Simulation ◽  
Seismic Performance ◽  
Angular Displacement ◽  
Reinforcement Structure ◽  
Wooden Frame ◽  
Element Simulation ◽  
Door Frame

To prevent the wooden door frame of traditional rural houses from being stuck due to diamond deformation under earthquake and improve the seismic capacity of rural houses, an innovative method of reinforcing the angular displacement of the wooden door frame with channel steel and the diagonal brace is proposed. The rationality of the finite element simulation is demonstrated by comparing the results of finite element simulation and quasistatic test based on reinforced and unreinforced wooden door frame specimens. On the basis of the finite element model of wooden door frame, the seismic performance of channel type and diagonal brace thickness of reinforced wooden door frame and the seismic performance of friction coefficient of unreinforced wooden door frame are studied, respectively. The results show that the lateral stiffness and the lateral bearing capacity of the reinforced wooden door frame increase with the increase of channel steel type and the diagonal brace thickness. The height of the channel steel section of the seismic reinforcement structure should be half of the unreinforced structure. With the increase of the friction coefficient, the lateral bearing capacity of the unreinforced wooden frame increases, while the ductility of the unreinforced wooden frame decreases.

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