A5048358596- Fatigue and fracture mechanics
- Numerical methods in engineering
- Metal Forming Simulation Techniques
- Mechanical Behavior of Composites
- Metallurgy and Material Forming
- Mechanical stress and fatigue analysis
- High-Velocity Impact and Material Behavior
- Elasticity and Material Modeling
- High Temperature Alloys and Creep
- Advanced Surface Polishing Techniques
- Structural Response to Dynamic Loads
- Coronary Interventions and Diagnostics
- Head and Neck Cancer Studies
- Aluminum Alloys Composites Properties
- Radiomics and Machine Learning in Medical Imaging
- Mechanical and Optical Resonators
- CO2 Sequestration and Geologic Interactions
- Structural Load-Bearing Analysis
- Nonlocal and gradient elasticity in micro/nano structures
- Intracranial Aneurysms: Treatment and Complications
- AI in cancer detection
- Microstructure and mechanical properties
- Fetal and Pediatric Neurological Disorders
- Advanced Welding Techniques Analysis
- Advanced MEMS and NEMS Technologies
Southern Medical University
2023-2024
Sun Yat-sen University
2024
Sun Yat-sen University Cancer Center
2024
Ansys (United States)
1999-2022
University of Illinois Urbana-Champaign
1998-2001
Max Planck Society
1996-1999
Helmholtz-Zentrum Hereon
1997
L3S Research Center
1993-1996
In the present paper, ductile crack growth in an aluminium alloy is numerically simulated using a cohesive zone model under both plane stress and strain conditions for two different fracture types, shear normal modes. The law consists of parts—a specific material’s separation traction energy. Both are assumed to be constant during (stable growth). order verify suitable processes, experimental records used as control curves numerical simulations. For traction, determined experimentally from...
This paper reports the development of micromachined thermal shear-stress sensors for underwater applications. The sensor is a polysilicon resistor sitting atop vacuum-insulated nitride diaphragm. Special challenges measurements, such as waterproof coating and minimization pressure crosstalk, have been addressed. More rigid diaphragms than aerial are implemented to increase operating range reduce with cost larger power consumption lower sensitivity. Sensors different diaphragm dimensions...
SUMMARY Arterial progressive damage, softening and non‐recoverable deformation are typical effects of percutaneous transluminal angioplasty (PTA), induced mechanically by the overstretching widening arterial walls during balloon dilatation. In this paper, we model ‘controlled vessel injury’ in cerebral extending a recently developed structural multi‐mechanism damage for tissue early stage aneurysms. The current constitutive focuses on mechanical can characterize wall anisotropy subfailure...
Abstract Fatigue failure plays an important role in engineering applications, especially when structural components experience significant cyclic thermal loading and complex force simultaneously. During the last decades, several post‐processing techniques have been developed based on empirical investigations of experimental evidence to predict fatigue life materials. The work at hand postulates a conventional continuum damage theory for thermomechanical modeling. In particular, implicit...
Abstract The study at hand introduces a new approach to characterize fatigue crack growth in small strain linear viscoelastic solids by configurational mechanics. In this study, Prony series with n - Maxwell elements are used describe the behavior. As starting point work, local balance of energy momentum is derived using free density. Moreover, cyclic loading, substitutes energy. Using energy, obtained. newly law loading appropriate for each cycle. finite element framework, nodal material...
The Sandler and Rubin cap model is the most popular that able to take account on geomaterial dilation compaction effects. However, its nonsmooth yielding surface often results in a slow convergent rate or even nonconvergent solution some numerical simulations. More often, analysts with have switch smooth model, for example, Pelessone order obtain solution. For cases of original experimental data available direct fitting best way obtaining required parameters. only derived parameters...
Abstract Bauteile werden durch Risse infolge ihrer lokalen Beanspruchungs‐konzentration deutlich geschwächt. Zur Bewertung der maximalen Restfestigkeit wird Widerstand eines Werkstoffs Rißwiderstandskurven bestimmt. Sie basieren auf global zugänglichen und meßbaren Größen. In einfachsten Vorstellung sollte Rißwiderstand nur vom Werkstoff abhängen. Dies trifft leider nicht zu. Mit dem GKSS spezifischen Kohäsivmodell Bruchvorgang realitätsnäher konstiutiv lokal beschrieben. Durch FEM...
Abstract Rißwiderstandskurven (R‐Kurven) als Beschreibung des Widerstands eines Werkstoffes gegen Rißausbreitung sind ein wichtiger Bestandteil von Fehlerbewertungsverfahren. Sie werden experimentell an kleinen Laborproben bestimmt. Damit verbunden ist jedoch die Unsicherheit hinsichtlich der Verwendbarkeit solcher R‐Kurven für Bauteilbewertung, da diese relativ Proben ermittelt und dadurch eine Geometrie‐ Belastungsabhängigkeit aufweisen. Mit einem konzeptionell neu aufbereiteten...