Rajeev Ranjan

Skilled mechanical engineer with 10 years of relevant experience in FEA and structural integrity assessment across various domains including Offshore, Marine, Wind Energy, Oil & Gas and Automotive sectors. Specializing in advanced Finite Element Analysis (FEA) and Computer-Aided Engineering (CAE). Strong background in linear and non-linear structural analysis, vibrational, transient and thermal analysis, fatigue (LCF/HCF), and buckling of load-bearing components.

Experienced in preparing structural integrity calculation reports, supporting design reviews, and working closely with design and project teams. Proficient in ANSYS, HYPERMESH, Nastran, and ABAQUS.

Lead Engineer at Quest Global (2023-05 – 2026-11)

Executed static non-linear, Dynamic and thermo-mechanical analyses of turbocharger assemblies and wind turbine structures with design optimization and fatigue analysis.

• Executed static non-linear, Dynamic and thermo-mechanical analyses of turbocharger assemblies to assess structural integrity and vibration performance, with design optimization using DOE and parametric studies in ANSYS Mechanical
• Performed linear and non-linear static and fatigue life estimation of wind turbine offshore/onshore inner tower platform structures, covering lifting analysis, transportation as per Euro code and DNV Standards
• Performed modal, harmonic, random vibration (PSD), and transient analysis to evaluate dynamic behavior of structural assemblies under operational & environmental loads
• Conducted FEA to verify yielding, buckling, and fatigue strength under static and dynamic loading
• Performed linear and non-linear analysis static analysis which includes geometric, Contact and material for different product assemblies with bolt Joint/Weld structure, preloading, press fit and troubleshooting FEA convergence issues
• Performed high-cycle (HCF) and low-cycle fatigue (LCF) analysis using FEA results to predict component life and ensure compliance with design standards
• Strong ability in ANSYS workbench/Space-Claim, HYPERMESH for geometric creation, clean up, modification, meshing, and advanced features in respective tools
• Proficient in applying EN 1993-1-8, DNV-OS (Offshore Standards), Design requirement for wind turbine, Euro code 3-Design of steel structure and ISO Standards
• Knowledge of scripting Python, MATLAB, and ANSYS Workbench Classic/APDL
• Utilizing knowledge of Solid Mechanics and Strength of Materials for structural analysis and performance assessment

Senior Engineer at L & T Technology Services Limited (2018-08 – 2023-05)

Performed static, modal, harmonic, PSD, transient, and fatigue analysis using FEA tools for complex mechanical components. Supervised team of engineers for FE model development and validation.

• Performed static (linear & nonlinear), modal, harmonic, PSD, transient, and fatigue analysis using FEA Tool ANSYS Workbench & ABAQUS for complex mechanical components
• Performed vibration analysis (Modal and frequency response) of battery pack assemblies to assess structural integrity and dynamic response under operational loads
• Performed linear and nonlinear static snap-fit analysis of connectors for push-in and pull-out conditions, including effective debugging of convergence issues
• Developed high-quality finite element models at component and assembly levels using HYPERMESH
• Set up and executed solver decks in ABAQUS, Optistruct, and Nastran for static and dynamic analyses
• Utilized ANSA to generate robust tetrahedral meshes for complex geometries, including Tyre tread models
• Supported product development for well completion tools for Halliburton (e.g., ERD gauge assembly and packer assembly), ensuring compliance with client-specific requirements and API standards
• Supervised team of engineers for FE model development, validation, and report preparation
• Actively collaborated with cross-functional teams, ensuring clear communication regarding project status, technical challenges, and solution proposals to meet client expectations and deadlines

Technical Support Engineer at Design Tech System Ltd (2017-09 – 2018-08)

Developed FE models for automotive vehicles and component-level assemblies, performing durability analysis and prepared technical reports.

• Developed FE models for full automotive vehicles and component-level assemblies, performing Durability Analysis using ANSYS, HYPERMESH, ABAQUS, OPTISTRUCT, and Nastran
• Prepared FE Model of BIW structure and Plastics components, which includes IP/Console/Door Trim, A/B/C-pillars, Roof Panel & Side Panels, Floor Panel, front and rear end structure
• Established connections such as spot welds, seam welds, adhesives, bolt joints, and other joining methods
• Prepared technical reports for different analysis using post processor software HYPERVIEW
• Coordinated with OEM clients for input data, data check, analyzing the results and project schedule

Structural Engineer at Aryatech Marine & Offshore Services Pvt. (2016-08 – 2017-09)

Performed structural analysis for offshore structures including jack-up rigs, substructures, and ship components with compliance to ABS and DNV standards.

• Performed structural analysis for offshore structures including jack-up rigs, substructures, derrick, spud can, legs, living quarters, and hull components
• Performed Static (Linear & Nonlinear), Buckling, Modal Analysis for different components of rig offshore/Ship structure as well as evaluating their strength against various operational & environmental loading conditions
• Performed hull gauging calculations for plate & stiffener thickness evaluation and minimum scantling checks as per ABS and DNV rules and guidelines
• Executed mid-surface modeling, solid meshing, and complex geometry handling in ANSYS Classic/Workbench
• Delivered drawing checks & structural detailing validation for classification clearance

Engineer at Conceptia Software Technologies Pvt. Ltd (2015-12 – 2016-08)

Performed linear and nonlinear static, modal, buckling, and hydrostatic analyses for submarine hulls and pressure-vessel structures with naval design compliance.

• Performed linear and nonlinear static, modal, buckling, and hydrostatic analyses for submarine hulls and pressure-vessel structures using ANSYS Workbench, ensuring compliance with naval structural design requirements
• Executed hand calculations for hull scantlings, stiffener sizing, and bulb-bar dimensioning in line with classification and naval design standards
• Prepared detailed 2D manufacturing drawings and 3D models for hull components, optimizing structural strength, weight efficiency, and manufacturability
• Conducted FEA validation of structural behavior under hydrostatic pressure, operational loads, and dynamic conditions to ensure structural integrity and safety margins
• Collaborated with multidisciplinary design teams to resolve structural issues, implement design improvements, and support critical reviews

Engineer at Kaveri Enterprises (2012-12 – 2015-12)

Developed manufacturing drawings, production drawings, and 3D models for hull structures and pressure vessels with PLM/PDM system management.

• Developed manufacturing drawings, production drawings, and 3D models for hull structures and pressure vessels using AutoCAD, UG NX, SolidWorks, CATIA and ANSYS Workbench
• Addressed structural and design issues through Design Amendment Forms (DAF) and Design Change Requests (DCR) within PLM systems, ensuring documentation accuracy and traceability
• Managing drawing related data in Product Lifecycle Management (PLM) and Project Data Management (PDM)
• Supported cross-functional engineering and production teams by providing clear drawings, specifications, and structural insights

Bachelor of Engineering (B.E) in Mechanical Engineering – Visvesvaraya Technological University (2007-06 – 2011-06)