چکیده مقاله
This rewritten and expanded study presents a verification and validation oriented finite element investigation of a cantilevered 6061 T6 aluminum L bracket subjected to static service loading, thermal exposure, and harmonic excitation The bracket represents a common load bearing component used in machinery frames, instrument mounts, housings, and support assemblies A three dimensional solid model was formulated using ten node quadratic tetrahedral elements, with fixed base boundary conditions and distributed loading along the hole perimeter to avoid artificial point load singularities The study emphasizes a complete engineering workflow: material and geometry definition, mesh convergence, static strength assessment, thermo mechanical stress evaluation, modal characterization, harmonic response screening, and design sensitivity analysis Mesh refinement from 15,200 to 276,000 elements showed convergence of peak von Mises stress to 175 2 MPa and tip displacement to 0 648 mm under a 1 5 kN reference load Validation style datasets for strain, displacement, and impact test frequencies demonstrated close numerical correlation, with strain discrepancies below 4 2%, displacement discrepancies below 2 7%, and modal frequency discrepancies below 2 7% Thermal gradients increased combined stress by as much as 36 2% relative to the isothermal static case, while excitation near the first bending mode produced significant dynamic amplification A parametric redesign study further showed that a 20% increase in thickness improved stress, stiffness, and frequency response, whereas a 50% increase in root fillet radius reduced peak stress with minimal mass penalty The article concludes that reliable finite element assessment requires evidence of convergence, multi observable validation, service realistic loading, and the translation of numerical output into practical design decisions
کلیدواژهها
نویسندگان
Ahmadreza Saeidi
M.Sc. Mechanical Engineering, University of Kashan
Ahmadreza Saeidi
M Sc Mechanical Engineering, University of Kashan
شیوه ارجاع
Saeidi, Ahmadreza,1405,Integrated Finite Element Verification and Thermo-Dynamic Design Evaluation of a 6061-T6 Aluminum L-Bracket,20th International Conference on Mechanical, Construction Industrial & Civil Engineering
ارائهشده در
مجموعه مقالات بیستمین کنفرانس بین المللی مکانیک، ساخت، صنایع و مهندسی عمران24 اردیبهشت 1405