This article reviews the recent progress of the finite element analysis (FEA) researches focusing on various expansion types, fatigue durability and the flexibility of the stents.
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Location or size? A finite element analysis study of necrotic lesion impact on femoral head collapse.
J Orthop Surg Res
January 2025
The Third Affiliated Hospital of Guangzhou University of Chinese Medicine, Guangzhou, 510378, P. R. China.
Background: The location and size of necrotic lesions are important factors for collapse, The preserved angles (PAs) are divided into anterior preserved angle (APA) and lateral preserved angle (LPA), which could accurately measure the location of necrosis lesion. We used them to evaluate the effect of the location and size of necrotic lesions on collapse by finite element analysis, to offer a framework for evaluating the prognosis of osteonecrosis of the femoral head (ONFH) in clinical settings.
Methods: 3 left hip models were constructed based on CT data.
Foot tissue stress in chronic ankle instability during the stance phase of cutting.
Med Biol Eng Comput
January 2025
Auckland Bioengineering Institute, The University of Auckland, Auckland, New Zealand.
Lower limb biomechanics of chronic ankle instability (CAI) individuals has been widely investigated, but few have evaluated the internal foot mechanics in CAI. This study evaluated bone and soft tissue stress in CAI contrasted with copers and non-injured participants during a cutting task. Integrating scanned 3D foot shapes and free-form deformation, sixty-six personalized finite element foot models were developed.
View Article and Find Full Text PDFUnloading damage evolution and rockburst risk assessment of Xuefengshan No.1 tunnel by combining multiple approaches.
Sci Rep
January 2025
College of Transportation Science and Engineering, Nanjing Tech University, Nanjing, 211816, China.
Large-scale rock burst disasters often occur in high-stress and deep-buried tunnels, due to challenges in accurate forecasting and the lack of clarity regarding the underlying mechanisms largely. This study combined on-site stress drilling tests, coupled finite and discrete element simulations, and theoretical calculations to examine unloading damage, rockburst evolution, and deformation failure of the high-stress and deep-buried Xuefengshan No.1 tunnel.
View Article and Find Full Text PDFInfluence of drilling incidence angle on the drilling force distribution of pneumatic impactor.
Sci Rep
January 2025
School of Mechanical and Electrical Engineering, Quzhou College of Technology, Quzhou, 324000, China.
Pneumatic impactor is widely used in the drilling process of various medium and high hard rocks with poor drill ability. Currently, there is relatively little analysis on the impact of the inclination of the rock surface during the drilling process on the drilling efficiency and excavation capability of pneumatic impactors. Based on the dynamic theory of impact drilling and finite element method (FEM), the constitutive model of HJC criterion and INVENTOR 3D mechanical structure design software, a 3D numerical analysis system of piston-bit head-rock during pneumatic impactor drilling is established by ANSYS LS-DYNA, a nonlinear dynamic analysis software.
View Article and Find Full Text PDFAn innovative strategy for constructing multicore yolk-shell Si/C anodes for lithium-ion batteries.
J Colloid Interface Sci
January 2025
Key Laboratory of Green and High-end Utilization of Salt Lake Resources, Qinghai Provincial Key Laboratory of Resources and Chemistry of Salt Lakes, Qinghai Institute of Salt Lakes, Chinese Academy of Sciences, Xining, Qinghai 810008, China. Electronic address:
The yolk-shell architecture offers a promising solution to the challenges of silicon (Si) anodes in lithium-ion batteries (LIBs), particularly in addressing the significant volume changes that occur during charge and discharge cycles. However, traditional construction methods often rely on sacrificial templates and acid or alkali etching, which limits industrial applicability. In this work, we successfully constructed a silicon/carbon (Si/C) composite with a multicore yolk-shell structure using scalable spray drying technology and in-situ growth of metal-organic frameworks (MOFs) at room temperature.
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