Static and free-vibration analyses of cracks in thin-shell structures based on an isogeometric-meshfree coupling approach

Nguyen‐Thanh, Nhon; Li, Weidong; Zhou, Kun

doi:10.1007/s00466-018-1564-y

Cited by 37 publications

(15 citation statements)

References 60 publications

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“…(6) Crack propagation is not discussed. In further research, we will use the coupling approach which integrates the mesh-free method and isogeometric analysis (IGA) for static and free-vibration analyses of cracks in thin-shell structures [21,22].…”

Section: Discussionmentioning

confidence: 99%

Analysis of Vibration Plate Cracking Based on Working Stress

Kang

Wang

et al. 2018

Machines

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At present, vibroseis has become the major technique to achieve environmental protection and high efficiency in fossil fuel exploration. During such exploration, a vibrator transmits seismic waves to the surface. The waves are excited by continuously changing the load stress from the burden of weight of the vehicle and the vibrator’s variable frequency load. This paper will apply a numerical simulation method to develop research on the analysis of vibration plate cracking based on working stress. Based on the structure and mechanism of vibroseis vibrator plate, a vibrator simulation model is built under system dynamics to develop research on the vibroseis plate load stress feature and gain distribution, and change pattern of the plate load stress. The results show that stress response around the upright welding of is high, and there is evident distortion in plate area, which matches the actual fracture position on the plate, and can be confirmed as a key area of plate fatigue.

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Section: Discussionmentioning

confidence: 99%

Analysis of Vibration Plate Cracking Based on Working Stress

Kang

Wang

et al. 2018

Machines

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“…Fracture mechanics analysis (e.g., [1,2,3]) is significant for engineering structure analysis and design process. In sensor structure analysis and design process, especially supporting bracket design, sensor structure elastic-plastic fracture mechanics (EPFM) analysis is essential to ensure reliability and service life of sensors, and those of prognostics and health management (PHM) systems, accordingly [4,5,6], e.g., the battery management system.…”

Section: Introductionmentioning

confidence: 99%

3D SSY Estimate of EPFM Constraint Parameter under Biaxial Loading for Sensor Structure Design

Ding

Wang

2019

Sensors

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Conventional sensor structure design and related fracture mechanics analysis are based on the single J-integral parameter approach of elastic-plastic fracture mechanics (EPFM). Under low crack constraint cases, the EPFM one-parameter approach generally gives a stress overestimate, which results in a great cost waste of labor and sensor components. The J-A two-parameter approach overcomes this limitation. To enable the extensive application of the J-A approach on theoretical research and sensor engineering problem, under small scale yielding (SSY) conditions, the authors developed an estimate method to conveniently and quickly obtain the constraint (second) parameter A values directly from T-stress. Practical engineering application of sensor structure analysis and design focuses on three-dimensional (3D) structures with biaxial external loading, while the estimate method was developed based on two-dimensional (2D) plain strain condition with uniaxial loading. In the current work, the estimate method was successfully extended to a 3D structure with biaxial loading cases, which is appropriate for practical sensor design. The estimate method extension and validation process was implemented through a thin 3D single edge cracked plate (SECP) specimen. The process implementation was completed in two specified planes of 3D SECP along model thickness. A wide range of material and geometrical properties were applied for the extension and validation process, with material hardening exponent value 3, 5 and 10, and crack length ratio 0.1, 0.3 and 0.7.

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“…IGA has been utilized in many fields, such as the fracture analysis [69], contact analysis [70] and plate and shell problems [15]. However, IGA faces several challenging issues that hinder its wide applications.…”

Section: (B) Developments Of Igamentioning

confidence: 99%

“…Valizadeh et al [84] to couple the IGA and RKPM and by Rosolen and Arroyo [85] to couple the IGA and the local maximum entropy (LME) meshfree method. These coupling approaches have been utilized in the structural analysis [86,87] and fracture analysis [69,88]. A recent work by Zhang and Wang [89] further demonstrated the equivalence between the isogeometric and RK approximations, thus providing a convenient way to implement local refinement in IGA.…”

Section: (B) Developments Of Igamentioning

confidence: 99%

“…Yang et al [171] developed an AMR scheme based on PHT-splines to investigate the fracture behaviors of shell structures. In addition, the IGA-meshfree coupling approach has been developed to retain the advantages, such as the refinement flexibility and higher-order approximation, and it has been utilized for investigating fracture behaviors of shells [69,172]. Recently, this coupling approach was further improved by introducing a unified formulation throughout the problem domain without requiring the domain subdivision and applied to study crack growth in shell structures [173].…”

Section: Fig 24mentioning

confidence: 99%

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Isogeometric analysis-based approaches for modeling solid materials and structures with defects

Li¹

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It was a great pleasure working with them in the same research group. The insightful discussions with them are beneficial to this Ph.D. research. My appreciation also extends to Associate Professor Xiao Zhongmin, Associate Professor Idapalapati Sridhar and Dr. Che Faxing for serving on my thesis advisory committee and providing their valuable suggestions. I gratefully acknowledge the Nanyang Technological University for providing me the research scholarship and SMRT-NTU Smart Urban Rail Corporate Laboratory for its continuous support during my Ph.D. study. Last but not least, I would like to express my heartfelt gratitude to my parents and sister for their unconditional love and encouragement.

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Static and free-vibration analyses of cracks in thin-shell structures based on an isogeometric-meshfree coupling approach

Abstract: K. (2018). Static and free-vibration analyses of cracks in thin-shell structures based on an isogeometric-meshfree coupling approach.

Cited by 37 publications

References 60 publications

Analysis of Vibration Plate Cracking Based on Working Stress

Analysis of Vibration Plate Cracking Based on Working Stress

3D SSY Estimate of EPFM Constraint Parameter under Biaxial Loading for Sensor Structure Design

Isogeometric analysis-based approaches for modeling solid materials and structures with defects

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