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Thermal buckling behavior of laminated composite plates: a finite-element study

Houdayfa OUNIS,Abdelouahab TATI,Adel BENCHABANE

Frontiers of Mechanical Engineering 2014, Volume 9, Issue 1,   Pages 41-49 doi: 10.1007/s11465-014-0284-z

Abstract:

In this paper, the thermal buckling behavior of composite laminated plates under a uniform temperaturestudy was also conducted to investigate the effect of the anisotropy of composite materials on the criticalbuckling temperature of laminated plates.The study showed that: 1) the critical buckling temperature generally decreases with the increasing ofbuckling temperature of laminated plates.

Keywords： thermal buckling     laminated composite plates     anisotropy     critical buckling temperature     finite-element method    

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MHD effect on the critical temperature differences of oscillatory thermocapillary convection in two-layer

Hulin HUANG, Xiaoming ZHOU,

Frontiers in Energy 2010, Volume 4, Issue 2,   Pages 155-160 doi: 10.1007/s11708-009-0063-4

Abstract: The effect of different directional magnetic fields on critical temperature differences of oscillatorythe , and directions can delay the transition from steady convection to oscillatory convection, and criticaltemperature differences increase with an increasing Hartmann number.

Keywords： magnetohydrodynamic     magnetic fields     thermocapillary convection     critical temperature difference     oscillatory    

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Improving buckling critical stress of sheet with the elasti cpressure on the surfaces of sheet and it

Song Aiping,Wang Longtai,Li Jizhong,Wang Shufeng

Strategic Study of CAE 2009, Volume 11, Issue 2,   Pages 53-59

Abstract:

A result was discovered by analyzing the stability of rectan gular sheet compressed by the pressure. When the sheet metal is supported by the elastic pressing forces putting on the upper and lower surfaces of sheet in stamping, the sheet stability can be improved and the wrinkling of the sheet metal formed in forming process can be reduced. Based on the result, a novel stamping die was developed. The die can be reconfigured quickly and can suppress the wrinkling of sheet.

Keywords： wrinkling     critical stress     die     stamping process    

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The critical role of autophagy in plant responses to abiotic stresses

Yu WANG,Jie ZHOU,Jingquan YU

Frontiers of Agricultural Science and Engineering 2017, Volume 4, Issue 1,   Pages 28-36 doi: 10.15302/J-FASE-2017130

Abstract: Autophagy is an evolutionary conserved recycling process in eukaryotes whereby intracellular components are engulfed by autophagosomes, which are subsequently transferred to the vacuoles for further degradation and reuse. In organisms like yeast and metazoans, autophagy is actively engaged during environmental perturbation either by degrading denatured proteins and organelles or by interfacing with stress related signaling molecules. Studies over the last decade have also revealed numerous important mechanisms where autophagy is widely involved in plant abiotic stress responses. Autophagy serves as a pivotal route for nutrient remobilization by the degradation of superfluous or damaged cellular cytoplasmic material and organelles. It is also reported to regulate the accumulation of reactive oxygen species, to maintain the cellular redox balance of plants under stressful conditions. Furthermore, autophagy is essential in regulating cellular toxicity by removing aggregated and/or denatured proteins and thereby improving plant stress tolerance. In this review, recent advances in our understanding of autophagy, along with pathways and regulatory networks through which it influences many aspects of plant growth and development in response to nutrient starvation, oxidative stress, osmotic stress and extreme temperatures are discussed.

Keywords： abiotic stresses     autophagy     extreme temperature     nutrient starvation     osmotic stress     oxidative stress    

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Experimental study and numerical simulation on compressive buckling behavior of thin steel skins in unilateral

Nicholas KEAGE, Christopher MAIOLO, Rebecca PIEROTTI, Xing MA

Frontiers of Structural and Civil Engineering 2011, Volume 5, Issue 3,   Pages 335-343 doi: 10.1007/s11709-011-0121-y

Abstract: test and finite element analysis has been undertaken to further investigate the effects of contact bucklingboth analyses have been examined and compared to data established from previous studies on contact bucklingThe result of the investigation has confirmed contact buckling theories and has foreshadowed the onsetof the newly observed phenomenon of secondary contact buckling.

Keywords： compressive     buckling     thin steel skins     unilateral contact     rigid constraints    

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Finding buckling points for nonlinear structures by dynamic relaxation scheme

Mohammad REZAIEE-PAJAND, Hossein ESTIRI

Frontiers of Structural and Civil Engineering 2020, Volume 14, Issue 1,   Pages 23-61 doi: 10.1007/s11709-019-0549-z

Abstract: Among the finding related to the structural static path are the critical and buckling points for nonlinear

Keywords： load factor     external work     dynamic relaxation     static equilibrium path     large displacement    

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Out-of-plane elastic buckling load and strength design of space truss arch with a rectangular section

Senping WANG; Xiaolong LIU; Bo YUAN; Minjie SHI; Yanhui WEI

Frontiers of Structural and Civil Engineering 2022, Volume 16, Issue 9,   Pages 1141-1152 doi: 10.1007/s11709-022-0866-5

Abstract: The calculation formula of out-of-plane elastic buckling loads of the space truss arch is derived basedon the classical solution of out-of-plane flexural-torsional buckling loads of the solid web arch.for the calculation of the arch with a small rise-span ratio, the formula for out-of-plane elastic bucklingcomponents of space truss circular arches bear only axial force, the design formulas to prevent the local buckling

Keywords： torsional stiffness     strength design     elastic buckling     space truss arches     out-of-plane    

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Flexural-torsional buckling behavior of aluminum alloy beams

Xiaonong GUO,Zhe XIONG,Zuyan SHEN

Frontiers of Structural and Civil Engineering 2015, Volume 9, Issue 2,   Pages 163-175 doi: 10.1007/s11709-014-0272-8

Abstract: This paper presents an investigation on the flexural-torsional buckling behavior of aluminum alloy beamsconcentrated loads, the failure pattern, load-deformation curves, bearing capacity and flexural-torsional bucklingIt is found that all the beam specimens collapsed in the flexural-torsional buckling with excessive deformationMoreover, the span, loading location and slenderness ratio influence the flexural-torsional bucklingSecondly, besides the experiments, a finite element method (FEM) analysis on the flexural-torsional buckling

Keywords： flexural-torsional buckling     aluminum alloy beams (AAB)     finite element method (FEM)     theoretical formula    

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Probabilistic stability of uncertain composite plates and stochastic irregularity in their buckling mode

Frontiers of Structural and Civil Engineering   Pages 179-190 doi: 10.1007/s11709-022-0888-z

Abstract: mechanical properties of the composite plate were considered Gaussian random fields and their effects on the bucklingFinally, the effect of spatially varying stochastic properties on the critical load of the plate andthe irregularity of buckling mode shapes and their sequences were studied for the first time.suggested that a linear relationship exists between the mechanical properties’ variation coefficient and criticalmodeling the plate properties as random fields, a significant stochastic irregularity is obtained in buckling

Keywords： composite plate     stochastic assume mode method     Karhunen−Loève theorem     polynomial chaos approach     plate buckling     irregularity in buckling mode shapes    

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Fundamental buckling of circular plates with elastically restrained edges and resting on concentric rigid

Lokavarapu Bhaskara Rao, Chellapilla Kameswara Rao

Frontiers of Mechanical Engineering 2013, Volume 8, Issue 3,   Pages 291-297 doi: 10.1007/s11465-013-0255-9

Abstract:

This work presents the existence of buckling mode switching with respect to the radius of concentricThe buckling mode may not be axisymmetric as previously assumed.The optimum radius of the concentric rigid ring support for maximum buckling load is also determined.Introducing internal rigid ring support, when placed at an optimal position increases the elastic buckling

Keywords： buckling     circular plate     elastically restrained edge     rigid ring support     mode switching    

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Experimental study on slender buckling-restrained knee braces with round steel bar cores

Frontiers of Structural and Civil Engineering 2023, Volume 17, Issue 1,   Pages 99-121 doi: 10.1007/s11709-022-0875-4

Abstract: This study aimed to investigate a novel slender buckling-restrained knee brace damper (BRKB) for weldedThe proposed BRKB adopts steel bar cores connected by a central coupler and restrained by tube bucklingThe advantages of the proposed damper include easy assembly compared to conventional buckling restrainednumber of contraction allowances, undesirable failure mechanisms that are global instability and local bucklingmetrics associated with both loading tests, such as strength capacities, strains at the cover tubes and buckling

Keywords： weld-free beam-to-column connections     moment-resisting frame     cyclic and compression loading tests     buckling-restrained    

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Lateral-torsional buckling capacity assessment of web opening steel girders by artificial neural networks

Yasser SHARIFI,Sajjad TOHIDI

Frontiers of Structural and Civil Engineering 2014, Volume 8, Issue 2,   Pages 167-177 doi: 10.1007/s11709-014-0236-z

Abstract: flexural torsional analysis of I-beams has been used to assess the effect of web opening on the lateral buckling) approach has been also employed to derive empirical formulae for predicting the lateral-torsional bucklingIt is found out that the proposed formulae can accurately predict residual lateral buckling capacitiesHence, the results of this study can be used for better prediction of buckling life of web opening of

Keywords： steel I-beams     lateral-torsional buckling     finite element (FE) method     artificial neural network (ANN) approach    

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Exploiting Additive Manufacturing Infill in Topology Optimization for Improved Buckling Load Artical

Anders Clausen, Niels Aage, Ole Sigmund

Engineering 2016, Volume 2, Issue 2,   Pages 250-257 doi: 10.1016/J.ENG.2016.02.006

Abstract: optimization provides a means for designing infill-based components that possess a strongly improved bucklingan important inadequacy of the standard minimum compliance topology optimization approach, in which bucklingis rarely accounted for; rather, a satisfactory buckling load is usually assured through a post-processingDepending on the properties of the infill material, the buckling load may be more than four times higher

Keywords： Additive manufacturing     Infill     Topology optimization     Buckling    

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Study on Ignition of Thermoplastic Linings

Xu Liang,Zhang Heping and Wan Yutian

Strategic Study of CAE 2007, Volume 9, Issue 12,   Pages 39-43

Abstract: Then the ignition time data was analyzed with the deduced model to get the critical heat flux, ignitiontemperature and thermal properties for the studied materials.The results showed that the deduced critical

Keywords： thermoplastics     ignitability     critical heat flux     ignition temperature    

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Experiments on channel columns with inclined simple edge stiffeners under compression loading

WANG Chungang, ZHANG Yaochun, ZHANG Zhuangnan

Frontiers of Structural and Civil Engineering 2007, Volume 1, Issue 3,   Pages 312-321 doi: 10.1007/s11709-007-0041-z

Abstract: All three sections have certain post-buckling strength, and the failure modes of most of the specimenscontained distortional buckling.

Keywords： different     post-buckling strength     capacity     distortional buckling     Furthermore    

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Title Author Date Type Operation

Thermal buckling behavior of laminated composite plates: a finite-element study

Houdayfa OUNIS,Abdelouahab TATI,Adel BENCHABANE

Journal Article

MHD effect on the critical temperature differences of oscillatory thermocapillary convection in two-layer

Hulin HUANG, Xiaoming ZHOU,

Journal Article

Improving buckling critical stress of sheet with the elasti cpressure on the surfaces of sheet and it

Song Aiping,Wang Longtai,Li Jizhong,Wang Shufeng

Journal Article

The critical role of autophagy in plant responses to abiotic stresses

Yu WANG,Jie ZHOU,Jingquan YU

Journal Article

Experimental study and numerical simulation on compressive buckling behavior of thin steel skins in unilateral

Nicholas KEAGE, Christopher MAIOLO, Rebecca PIEROTTI, Xing MA

Journal Article

Finding buckling points for nonlinear structures by dynamic relaxation scheme

Mohammad REZAIEE-PAJAND, Hossein ESTIRI

Journal Article

Out-of-plane elastic buckling load and strength design of space truss arch with a rectangular section

Senping WANG; Xiaolong LIU; Bo YUAN; Minjie SHI; Yanhui WEI

Journal Article

Flexural-torsional buckling behavior of aluminum alloy beams

Xiaonong GUO,Zhe XIONG,Zuyan SHEN

Journal Article

Probabilistic stability of uncertain composite plates and stochastic irregularity in their buckling mode

Journal Article

Fundamental buckling of circular plates with elastically restrained edges and resting on concentric rigid

Lokavarapu Bhaskara Rao, Chellapilla Kameswara Rao

Journal Article

Experimental study on slender buckling-restrained knee braces with round steel bar cores

Journal Article

Lateral-torsional buckling capacity assessment of web opening steel girders by artificial neural networks

Yasser SHARIFI,Sajjad TOHIDI

Journal Article

Exploiting Additive Manufacturing Infill in Topology Optimization for Improved Buckling Load

Anders Clausen, Niels Aage, Ole Sigmund

Journal Article

Study on Ignition of Thermoplastic Linings

Xu Liang,Zhang Heping and Wan Yutian

Journal Article

Experiments on channel columns with inclined simple edge stiffeners under compression loading

WANG Chungang, ZHANG Yaochun, ZHANG Zhuangnan

Journal Article