Senior Associate, Mechanical Engineer

L3HHCM20•Town of Babylon, NY

1d•Onsite

About The Position

L3Harris Stress engineers will review and interpret the mechanical environmental conditions provided in the statement of work and the technical performance specification as it applies to the equipment being developed under the program. Internal loads that will size the equipment to meet the program technical requirements will be developed based on the externally applied acceleration, vibration, shock, and other dynamic loads. The appropriate factors of safety will be applied when writing yield and ultimate margins of safety to demonstrate structural integrity and considering temperature effects on material properties and strength allowables. Stress engineers are responsible for achieving a compliant design which will meet all program environmental requirements and demonstrated by successfully passing qualification testing. This will be accomplished by conducting hand calculations based on strength of materials and structural mechanics theory. Finite element analysis (FEA), using Ansys, will be employed when conducting structural dynamic analysis of complex geometry individual parts and/or multi-body assemblies. Demonstrating good FEA practices are key. Being able to optimize geometry and meshes is a key skill. Multi-part assemblies are modelled while considering the interaction of parts. These interactions can be contacts, joints, beams, or constraint equations based on the requirement of the interaction and the fidelity of the result needed in the area. Stress engineers are also required to analyze structural and thermal loads on electronic assemblies consisting of Circuit Card Assemblies (CCAs). Margins will be written on the structures and on the junction temperatures of electronic components. Experience with Icepak or a similar CCA modeling tool is preferred, but not required. Stress engineers are required to use computer aided solid modeling design tools to ensure that the as-designed geometry is the geometry analyzed. They are responsible for interacting with the integrated product development team. They are also required to support testing (test setups, monitor the test, analyze the data) and be able to correlate their results to the test results. Communication skills consisting of giving presentations and documenting analysis results in a report in a PowerPoint or Word document format are required. This also includes being able to estimate time and schedule for a given assignment and being able to mentor young engineers to build their knowledge.

Requirements

Bachelor’s Degree with a minimum of 2 years of prior related experience OR Graduate Degree or equivalent with 0 to 2 years of prior related experience OR a minimum of 6 years of prior related experience in lieu of a degree.
Proficiency in Finite Element Analysis (FEA).
Proficiency in Ansys Mechanical (including static, random vibration, shock, thermal, transient load conditions).
Experience with LS-Dyna or ADAMs.
CAD proficiency.
Ability to work to assigned schedules.
Eligible to obtain a security clearance.

Nice To Haves

Experience with Icepak or a similar CCA modeling tool.
Non-linear structural analysis.
CFD.
Proficiency with Microsoft office tools.

Responsibilities

Review and interpret the mechanical environmental conditions provided in the statement of work and the technical performance specification.
Develop internal loads to size equipment to meet program technical requirements based on externally applied acceleration, vibration, shock, and other dynamic loads.
Apply appropriate factors of safety when writing yield and ultimate margins of safety to demonstrate structural integrity, considering temperature effects on material properties and strength allowables.
Achieve a compliant design that meets all program environmental requirements and is demonstrated by successfully passing qualification testing.
Conduct hand calculations based on strength of materials and structural mechanics theory.
Employ Finite Element Analysis (FEA), using Ansys, for structural dynamic analysis of complex geometry individual parts and/or multi-body assemblies.
Demonstrate good FEA practices, including optimizing geometry and meshes.
Model multi-part assemblies considering the interaction of parts (contacts, joints, beams, or constraint equations).
Analyze structural and thermal loads on electronic assemblies consisting of Circuit Card Assemblies (CCAs).
Write margins on the structures and on the junction temperatures of electronic components.
Use computer aided solid modeling design tools to ensure analyzed geometry matches as-designed geometry.
Interact with the integrated product development team.
Support testing (test setups, monitor the test, analyze the data) and correlate results to test results.
Give presentations and document analysis results in reports (PowerPoint or Word document format).
Estimate time and schedule for a given assignment.
Mentor young engineers to build their knowledge.