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I need a finite-element stress check on a 180° return bend that will sit inside a direct-fired heater coil. This return bend is built by butt-welding two 90° wrought elbows made of 347AP stainless steel. The extrados wall is machined with a 0.25-inch deep pocket that will be filled with Stellite. Because of this pocket, this geometry falls outside the scope of API 530, I want to confirm its integrity under internal pressure only. Scope of the study • Two load cases: 600 psig internal pressure with the elastic allowable stress from API 530 and 380 psig with the rupture allowable stress from API 530. I can provide the allowable stresses for each case. For both cases the design metal temperature is 1390 °F. •Include the minimum length necessary of the upstream and downstream piping to run the analysis. • No external forces or moments need to be considered. • The dimensions and details of these return bends will be provided. What I expect to receive 1. Native FEA model (ANSYS, Abaqus, or comparable) plus a neutral STEP file. 2. Stress and displacement contour plots for all cases, highlighting peak stresses. 3. A concise calculation note that describes assumptions, mesh details, boundary conditions, and compares results against allowable stresses in the relevant ASME section. 4. A comparison of the maximum simulated stress vs the allowable stresses provided. 5. The report is needed by August 10th 2026. 6. If either case fails, advise on the maximum acceptable pressure for that case. Keep element quality reasonable and demonstrate mesh convergence; I am looking for a professional, readily-auditable package rather than an illustration. Let me know the software you prefer and your turnaround time once you have my fabrication drawing and design temperature.
Project ID: 40551144
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21 freelancers are bidding on average $3,923 USD for this job

As an accomplished engineer, I have a unique set of skills, perfectly fitting the niche that your project requires. Over the course of my career, I have consistently handled complex projects in various industries, including mechanical engineering and structural design. My aptitude in advanced software such as ANSYS and Abaqus will facilitate the delivery of native FEA models containing detailed stress and displacement contour plots during my proposed fast turnaround time. Having worked with notable companies like Siemens, FCowen Engineering Inc, and Tulsa Heaters Midstream LLC, I have solid experience in handling challenging projects encompassing high-precision calculations. Not only am I adept at meeting the industry's rigorous standards, but I also excel at thinking outside the box to overcome obstacles. Rest assured that I will conduct a thorough analysis of your custom heater return bends, considering all relevant factors such as rupture allowable stress from API 530 and applying appropriate design metal temperatures. I'm looking forward to your reply Regards Victor
$3,000 USD in 7 days
7.0
7.0

Hi there, I would be happy to assist with the FEA stress assessment of your 180° return bend. I have experience with high-temperature piping, pressure vessel analysis, and API/ASME code-based evaluations using ANSYS Mechanical. Approach: • 3D FEA with both API 530 pressure cases • Mesh convergence and stress evaluation • Comparison with allowable stresses and pressure recommendation if required Deliverables: • Native ANSYS model + STEP file • Stress/displacement plots • Calculation report with code comparison Timeline and budget can be discussed after reviewing the fabrication drawings. Looking forward to collaborating on this project. Let's connect to discuss further. Best regards, Arati M.
$4,000 USD in 7 days
6.8
6.8

I can provide detailed Finite Element Analysis (FEA) for your custom heater return bends to evaluate their structural performance under the required operating conditions. Using industry-standard FEA software, I will assess stress distribution, deformation, thermal effects, and potential areas of concern to ensure the design meets performance and safety requirements. My approach includes building an accurate simulation model based on your geometry, material properties, boundary conditions, and loading scenarios. I will validate the analysis, interpret the results, and recommend any necessary design improvements to enhance durability, reduce stress concentrations, and optimize the overall performance of the return bends. You will receive a comprehensive FEA report with clear visual results, engineering insights, and practical recommendations to support design decisions and manufacturing. I am committed to delivering accurate, reliable analysis with timely communication and on-time completion, and I look forward to contributing to the success of your project.
$3,000 USD in 7 days
5.0
5.0

I am excited to work on the finite-element stress check for your custom heater return bends. My solid background in mechanical engineering and solidworks allows me to construct a reliable FEA model for your unique design. I will ensure to provide the stress and displacement contour plots highlighting peak stresses for each load case, comparing them against the allowable stresses you provide. I will also include the required documentation, indicating assumptions, mesh details, and boundary conditions to ensure clarity and auditability. What software do you prefer for the FEA model? How quickly can you provide the necessary fabrication drawing? Are there any specific requirements for the report format? Looking forward to collaborating on this project!
$3,000 USD in 13 days
3.2
3.2

Hello there, You need a thorough finite-element stress analysis on a 180° return bend in a direct-fired heater coil, ensuring integrity beyond API 530 standards. Your focus on precise pressure cases at elevated temperatures aligns with detailed structural engineering checks I can deliver using Abaqus. I’ve completed stress analysis projects involving stainless steel components and complex geometries under high-temperature loads, ensuring safety margins and compliance. Here’s my approach: 1) Review your fabrication drawing and design inputs; 2) Develop and mesh the Abaqus FEA model, including piping length; 3) Deliver detailed stress contours, results vs allowable stress, and a concise report highlighting assumptions, mesh quality, and recommendations. I can start upon receiving your drawings and provide the first results within two weeks, allowing time for any refinements and consultations via quick calls or messages. Which specific Abaqus elements and mesh sizes do you prefer for modeling the pocket feature to ensure convergence and accuracy? Best regards, Anatolie
$4,440 USD in 1 day
0.0
0.0

Tulsa, United States
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