Iranian Journal of Science and Technology, Transactions of Mechanical Engineering
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Khả năng sản xuất và Đánh giá Cơ học của Cấu trúc In 3D Ti-6Al-4V cho Implants Đặc biệt cho Bệnh Nhân Dịch bởi AI
Iranian Journal of Science and Technology, Transactions of Mechanical Engineering - - Trang 1-13 - 2023
Các tiến bộ gần đây trong công nghệ sản xuất gia tăng cho vật liệu kim loại đã mở ra con đường cho việc tạo ra các implant đặc thù cho bệnh nhân với các thuộc tính cơ học được điều chỉnh cho việc tái tạo mô xương. Để giải quyết vấn đề bảo vệ áp lực và cải thiện tích hợp xương, các implant có cấu trúc bên trong được kiến trúc với một thiết kế độc đáo có khả năng mô phỏng các thuộc tính cơ học của x...... hiện toàn bộ
#biomaterials #additive manufacturing #titanium alloys #patient-specific implants #trabecular structures #mechanical properties
Inverse Dynamic Analysis of an Inclined FGM Beam Due to Moving Load for Estimating the Mass of Moving Load Based on a CGM
Iranian Journal of Science and Technology, Transactions of Mechanical Engineering - Tập 44 - Trang 543-556 - 2019
In this paper, the use of the inverse solution method for estimating the mass of moving load on an inclined functionally graded material (FGM) Timoshenko beam is discussed based on the measured displacements. Fletcher–Reeves (FR) method is used to solve the inverse problem. Also, in the process of solving the inverse problem and in order to solve the direct problem, Newmark method is applied for d...... hiện toàn bộ
Configuration Design of Single-Loop Non-overconstrained Mechanism with Inactive Joints
Iranian Journal of Science and Technology, Transactions of Mechanical Engineering - Tập 46 - Trang 61-69 - 2020
In order to weaken the strict geometric constraint relationship between the axes of joints so as to reduce manufacturing/assembling errors of overconstrained mechanism, a configuration design methodology for single-loop non-overconstrained mechanism with inactive joints is proposed in this paper based on the screw theory. After completing analysis of degrees of freedom, the design principle and co...... hiện toàn bộ
A Parallel Manipulator for Simulating the Ship Seakeeping Trial
Iranian Journal of Science and Technology, Transactions of Mechanical Engineering - Tập 43 - Trang 529-538 - 2018
In this work, a ship motion simulator based on a parallel manipulator able to replicate the seakeeping trial is introduced. The mobility of the moving platform is explained through the theory of screws which reveals the existence of three constraint systems reciprocal to the motion-screw system of a central passive kinematic chain. Thereafter, the forward displacement analysis leads to five quadra...... hiện toàn bộ
A Study of Influence of Hall Effect in Semiconducting Spherical Shell with Moore-Gibson-Thompson-Photo-Thermoelastic Model
Iranian Journal of Science and Technology, Transactions of Mechanical Engineering - Tập 47 - Trang 661-671 - 2022
This research aims to study the photo-thermoelastic interactions in an infinite semiconducting spherical shell in the context of the Moore-Gibson-Thompson-Photo-Thermo elasticity theory. The spherical shell is influenced by a high magnetic field acting along its axis. The inner and outer boundary surface of the spherical shell is traction free and subjected to time-dependent heating. The numerical...... hiện toàn bộ
Numerical Investigation of Heat Transfer of Non-Newtonian Power-Law Fluids Around a Triangular Prism in Time-Periodic Regime
Iranian Journal of Science and Technology, Transactions of Mechanical Engineering - Tập 44 - Trang 427-441 - 2018
Laminar heat transfer characteristics of non-Newtonian power-law fluids from a long (heated) triangular prism in the time-periodic regime have been explored. Momentum and energy equations were solved using finite volume methodology over the range of non-dimensional control parameters: Reynolds number (Re) = 50–150, Prandtl number (Pr) = 1–50 and power-law index (n) = 0.4–1.8. For the fixed Pr, the...... hiện toàn bộ
Tissue Stresses in Stented Coronary Arteries with Different Geometries: Effect of the Relation Between Stent Length and Lesion Length
Iranian Journal of Science and Technology, Transactions of Mechanical Engineering - Tập 43 Số S1 - Trang 957-964 - 2019
Energy, Exergy and Economic Analyses of Different Configurations for a Combined HGAX/ORC Cooling System
Iranian Journal of Science and Technology, Transactions of Mechanical Engineering - Tập 46 - Trang 733-744 - 2022
A comparative study is performed to investigate the improved heat-driven refrigeration systems. The systems use a low-temperature heat source to produce low-temperature cooling (− 55 °C). The base system consisted of a hybrid GAX (HGAX) cycle and a Rankine cycle. Three major features for the HGAX cycle are proposed in four configurations to reduce the high temperature of the compressed fluid exiti...... hiện toàn bộ
Natural Frequencies of Multistep Functionally Graded Beam with Cracks
Iranian Journal of Science and Technology, Transactions of Mechanical Engineering - Tập 43 - Trang 881-916 - 2018
Free vibration of cracked multistep beam made of functionally graded material is studied on the basis of the Timoshenko beam theory and actual position of neutral plane of functionally graded beam. Crack model is adopted using a pair of translational and rotational springs of stiffness calculated from the same crack depth. An exact dynamic shape function is proposed and used to conduct a simplifie...... hiện toàn bộ
Research on Axial Force and Energy Balance of Seawater Desalination High-Pressure Pump-Based Whole Flow Field Numerical Calculation
Iranian Journal of Science and Technology, Transactions of Mechanical Engineering - - Trang 1-19 - 2023
This paper uses the whole flow field numerical simulation method to study the axial force and balance device of a seawater desalination pump (SDP) with high capacity and pressure. The axial force on the impeller is divided into the forces acting on the outer and inner surface and then monitored separately in the numerical calculation. The pressure distribution law of the pump chamber and blade sur...... hiện toàn bộ
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