Resimulation of Viscoelastic Characterization for PV Module Packaging Materials with COMSOL 6.1 Functionality -- 2

Job ID: 39327580

Budget: €30 – €250 EUR

Project Overview:
Seeking a COMSOL Multiphysics 6.1 expert to replicate the findings of "Viscoelastic Material Characterization and Modeling of Photovoltaic Module Packaging Materials for Direct Finite-Element Method Input''.

Key Objectives:
- Resimulate viscoelastic properties of EVA, POE, ionomer, TPT, and KPf across -60°C to 95°C, 10⁻⁸ to 10² Hz, and 10%–90% RH.
- Validate results against paper’s DMA, stress relaxation, and CTE data.
- Reproduce 2D PV module simulation for cell gap displacement under 1 kPa load.
- Develop COMSOL functionality parameters for Prony series, WLF equations, and CTE polynomials.

Responsibilities:
- Build COMSOL 6.1 model using paper’s Prony series, WLF parameters, and CTE polynomials.
- Create functionality parameters:
- Prony Series Tables: Input (g_n, τ_n) pairs for each material (Table I).
- WLF Function: Implement modified WLF equation with C_1, C_2, γ for temperature-humidity shifts.
- CTE Polynomial: Define temperature-dependent CTE using Table II coefficients.
- Simulate viscoelastic response and cell gap, comparing with paper’s results.
- Document setup, functionality, and comparisons.
Qualifications:
- Expertise in COMSOL 6.1, custom functions, and viscoelastic modeling.
- Background in mechanical engineering or materials science.
- Familiarity with DMA, stress relaxation, CTE, and PV mechanics.
Deliverables:
- Report comparing results to paper’s findings.
- Visuals (master curves, relaxation plots, cell gap graphs).
- COMSOL model with functionality parameters.
- Fidelity vs. computational time analysis.
Summary of Research Paper:
1. DMA on EVA, POE, ionomer, TPT, KPf (-60°C to 95°C, 0.1–100 Hz) for master curves.
2. Generalized Maxwell models (Prony series), time-domain for ionomer, backsheets.
3. No viscoelastic changes after 1000–5000h exposure.
4. Humidity modeled (γ = 0.01–0.26).
5. CTE measured (-65°C to 95°C), polynomial fits.
6. 2D PV module simulation: 20-term models yield ~10% error.