NVH_CAE_Engineer_Yang Liu

Yang Liu

**** ******* ****** ** #***

Rochester Hills, MI 48306

Cellphone: 248-***-****

Email: *********@*****.***

Field of Interest:

NVH CAE Engineer (NVH/Durability)

Summary:

• 4+ years of experience of powertrain CAE simulation, specific in Noise, Vibration and Harshness (NVH) and Durability analysis.

• 3+ years powertrain structural design and verification experience, specific in transmission, driveline components and mounting structures.

• Familiar with automotive powertrain systems, specific in engine, transmission, driveline, intake/exhaust system for NVH and durability analysis.

• Got exposure on powertrain virtual analysis software, such as LMS Virtual.Lab and AVL Excite for dynamic analysis.

Technical Experts:

• Powertrain Systems NVH CAE Analysis, FRF/Modal, Vibration Response, Radiated Noise Analysis, with Altair Hyperworks and Nastran.

• Structural Durability/Fatigue CAE Analysis with Fe-Safe.

• Familiar with building FEA models for simulation, experience in analytical issue resolution, problem solving, working independently or with team, handling multiple projects, capability of working with offshore suppliers or specialists.

• Familiar with the working process with designers to meet the system functional targets.

Professional Skills:

Hyperworks, Nastran, Abaqus, FE-Safe, ANSYS/Workbench

Professional Experience:

Powertrain Simulation Engineer

Sinovel Wind Group - R&D Department. Feb 2011 - Mar 2013, Beijing

• Powertrain Dynamic Simulation and Validation (Hyperworks, Nastran, FE-Safe in Design and Simulation).

• Work with designer and offshore team to support powertrain design and validation on structural statics, NVH and durability simulation. Familiar with assembly structure static, modal and fatigue analysis with subsystems. Mainly focus on static stress, FRF, modal analysis and fatigue analysis for powertrain systems.

Highlights Engineering Experience:

4 Years CAE Experience: (2 year professional+2 years academic)

Turbine Hub Modal Analysis 1.5/2/3/5/6MW Wind Turbine

Create dynamic simulation model for Turbine Hub with blades and main-shaft. Focus on hub natural frequency and mode shape. Extract top 20 modes with Lanczos method. Work with design engineer to change the hub structure to meet NVH requirements in Hub design.

Electrical Generator Mounting System Frequency Response Analysis (FRF)

Simplify the electrical generator mounting system with electrical generator and main-frame. Extract top 20 modes with Lanczos method. Apply modal superposition method to get frequency response function to meet design target for NVH.

Structures Strain-Stress and Fatigue Analysis (Hub/Main-frame/Bearing Housing/Hub Spacer)

Build simulation model for structure. Run strain-stress analysis to get von-mises stress. Determine S-N curve, fatigue load spectrum and unit stress. Perform fatigue analysis based on Miner Principal to get accumulative damage and fatigue life. Work with design engineer to modify model to meet design target.

Fatigue Life Predication based on Rainflow Method (Durability)

Extract cycles from load spectrum with Rainflow method. Apply Morrow and SWT fatigue method to predict fatigue life of every cycle. Base on Miner’s Rule to get accumulative damage and fatigue life.

Education:

University of Michigan in Dearborn Dearborn, MI

M.S. of Mechanical Engineering GPA: 3.8/4.0 Sep 2014- Present

Dalian University of Technology Dalian, CHN

M.S. of Mechanical Engineering GPA: 3.3/4.0 Dec 2010

Dalian Jiaotong University Dalian, CHN

B.S. of Mechanical Engineering GPA: 3.3/4.0 Jun 2008

Academic Courses:

Automotive Powertrain, Powertrain NVH, Mechanical Vibration, Finite Element Method, Fracture and Fatigue Consideration in Design.

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