### 7.2.2. Polyethylene Fiber-Based Armor

The performance of the orthotropic model coupled with a nonlinear equation of state has been further evaluated for the ballistic performance of a new Dyneema (UD-HB25) composite, which was being assessed by DCTA and TNO through an experimental testing programme [12]. Simulations of inverse flyer plate tests were conducted and a remarkable correspondence between test and simulation was obtained using the new composite model. The derived model was then successfully used to perform simulations of fragment impact tests and make an assessment of the V50 impact velocity. The model also reproduced the deformation and delamination extent of the target plate, as illustrated in Figure 7.11: Autodyn Simulations of 1.1g FSP Impacting 3.2mm Dyneema UDHB25 (Magenta Regions Indicate Delamination).

Figure 7.11: Autodyn Simulations of 1.1g FSP Impacting 3.2mm Dyneema UDHB25 (Magenta Regions Indicate Delamination)

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