Mechanical Engineering Jobs

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Fixed-Price - Expert ($$$) - Est. Budget: $2,400 - Posted
Looking for a Mechanical Engineer who can work with 3D Modeling/CAD software and is capable of designing for manufacture. Due to employing people who frankly were not capable, I have current designs for a product with numerous problems. You will take the CAD sketches and details about our current design and fix these problems.
Skills: Mechanical Engineering 3D Design SolidWorks
Hourly - Intermediate ($$) - Est. Time: Less than 1 week, 10-30 hrs/week - Posted
Our goal is to create miniature plastic models of a molecule: beta hydroxybutyrate. We have an .stl file and have successfully 3D printed a prototype, but we have no way of actually making this into a moldable/manufacturable part. Please see attachment for an idea of what the molecule looks like (or you can search for it yourself). We realize some things may have to change a bit in order to engineer this for manufacturing (into a step / iges file), and to keep it cost-effective - you may have to redraw. We want to eventually make a steel or aluminum mold and produce thousands of these parts. Looking for an engineer with experience with designing for plastic injection molding. Thank you!
Skills: Mechanical Engineering 3D Design Manufacturing Design
Fixed-Price - Expert ($$$) - Est. Budget: $50 - Posted
Hi, I'm looking for an expert mechanical engineer to provide HVAC design for a restaurant in Qatar. Preferable is you are the local engineer and have enough information about central AC design. Also electrical, piping and sewage drawings is done. the candidate should be an expert in HVAC please do not send me if you haven't done similar project. PLEASE LEAVE ME YOUR SKYPE ID, so I can add you for further discussion. Thanks
Skills: Mechanical Engineering Electrical engineering HVAC System Design Mechanical Design
Hourly - Expert ($$$) - Est. Time: 1 to 3 months, Less than 10 hrs/week - Posted
Looking for experienced professional with high level of education in Mechanical engineering, Biomechanics, and/or Product design. Experience in working with fitness equipment is preferred. This job is for a patent pending fitness equipment. It requires a final touch to improve comfortability(comfort), make it more compact(for traveling or storage), and maximize performance. Drawings and photos of the equipment will be provided. After improvements are made we will need you to submit professional design ready to be presented for manufacturing.
Skills: Mechanical Engineering Physical Fitness Product Design
Fixed-Price - Entry Level ($) - Est. Budget: $65 - Posted
I'm looking for an engineer to develop a set of piecewise equations for computing the stress field around a shaped hole in an infinite plate. The hole shall take the form of compound ellipses, which intersect at a points of equal slope (see attachment). The analyst will assume that the stress field of each of the compound ellipses will behave independently from one another. Verification of equal stress state at the intersection of the ellipses is required. The assumption will be further validated with finite element modeling in future work. The stress field around the perimeter of the ellipse will be a function of theta and will include the following parameters: R = Ratio of A-to-B (0<R<inf) M = curvature at intersection, squareness (-inf<M<0) The stress field around an elliptical feature can be found from a reference such as Peterson's Stress Concentration Factors, or other locations on the internet (e.g. http://www2.mae.ufl.edu/haftka/adv-elast/lectures/Sections14.1-2.pdf). The developed equations will be used to optimize the length-to-width ratio and squareness of such a hole in a known biaxial stress field, using stress superposition in a fatigue-critical application. Applicants should provide proposal with: 1. Estimated cost 2. Estimated number of hours to perform work 3. Soonest possible start date and associated finishing date >>>DELIVERABLE<<< The deliverable will be a PDF document with the derivation of a piecewise equation for the stress field around the perimeter of a shaped hole, as described in the attachment.
Skills: Mechanical Engineering Calculus Geometry Physics
Hourly - Intermediate ($$) - Est. Time: 1 to 3 months, Less than 10 hrs/week - Posted
Hi, I need help with the design of a waterproof generator casing. Use case: the waterproof casing will be used as the hub structure of a vertical hydropower turbine. Blades will be fitted to the outside of the casing. Generator goes inside and shaft comes out through the bottom. Casing is put at a water depth of 3 meter and will be subject to Tnom=3000Nm with spikes of 5000Nm. Casing has to be made 100% waterproof for at least 10 years. Cost of manufacturing has to be estimated. Abrasive materials such as sand may be present in the water. Mechanical face seals or other have to be evaluated. Generator inside of this casing will be 300 mm in diameter and up to 1 meter high. That's all the info I can share at this moment. I need someone to create a waterproof assembly around the generator. This assembly needs to have a dynamic seal to waterproof a moving axle (RPM 100 to 200). Please give me an estimated plan of approach and time needed.
Skills: Mechanical Engineering Mechanical Design
Fixed-Price - Expert ($$$) - Est. Budget: $100 - Posted
Looking for a Mechanical Engineer who can source parts and design purgeable housing for a NEMA-23 stepper motor, which could also be scaled down to a NEMA-17 stepper motor. The housing needs to contain an inlet for air, an exhaust vent, and a hole for a 6-pin connector that would connect the wiring of the motor as well as the thermostat for the purging system. Need to source the parts necessary, including the housing, wiring, glands, and anything else required in creating the housing for the motors to be purgeable and meet NFPA Class 1 Division 1 Safety Specifications - essential aspect for this project.
Skills: Mechanical Engineering
Fixed-Price - Intermediate ($$) - Est. Budget: $40 - Posted
I need your help in the abaqus modeling and the data analysis part.Here are the details. what I need you to do is help with the modeling part with abaqus(one plate and 3 plates),you need to change the dimensions of the cross sections and materials and other aspects you may think up.and finish the 3rd and 4th prar in thesis. Please send me the original file of the abaqus modeling ending with.cae,
Skills: Mechanical Engineering Abaqus Academic Writing