Charts and energy test of ABAQUS

To analyze the integrated performance of designed system, we model the sample with ABAQUS Software considering the existing standards.
Moreover, to compare the performance of the system with other existing products, it is attempted to perform all tests available on both this sample and other common metal guardrails, and results are listed below.
To analyze the performance of this invention, considering the design of real pieces, these aspects are also evaluated in the model and the results of impact is recorded as graphic videos and chart analysis which is explained below.
The desired design standard for the maximum number of impacts applied to barriers, is NCHRP230, based on which two examples are analyzed:

  1. A 2000 kg vehicle running at 110 km/h and impact angle of 25 degrees
  2. A 40000 kg vehicle with an 80 km/h velocity and impact angle of 20 degrees

Tension and energy charts for the 40000 kg vehicle Road shield panels

flex road shield tension test ABAQUS

Fig. 1

Strain for flex road shield ABAQUS test

Fig. 2

flex road shield Stress chart with ABAQUS

Fig. 3

flex Road shield PEEQ chart with ABAQUS

Fig. 4

Tension and energy charts for the 2000 kg vehicle by Road shield panels

Tension and energy charts for the 2000 kg vehicle by Flex Road shield panels

Fig. 5

Flex road shield STRAIN chart with ABAQUS

Fig. 6

Flex Road Shield STRESS chart with ABAQUS

Fig. 7

Flex Road Shield PEEQ chart with ABAQUS

Fig. 8

Charts and compared results for metal guardrails with Road shield panels

Charts and compared results for metal guardrails with Flex Road shield panels

Fig. 9

Plastic Energy Dissipation of Flex road shield guardrail system

Fig. 10

Comparing Strain energy chart for Flex road shield guardrail system

Fig. 11

40000 kq comparing charts ABAQUS test for Flex Road Shield

Fig. 12

Plastic Energy Dissipation of Flex road shield guardrail system - 40000 kg vehicle

Fig. 13

Strain energy chart for Flex road shield in comparison with standard guardrails

Fig. 14

By comparing the energy charts of two different designs, we conclude that based on the model, the amount of energy absorbed by Road shield panels when hit by a 2000 kg vehicle is increased by 25%, which is the amount needed for complete energy dissipation and for the 40000 kg vehicle, this amount is shown to be 3.5 times higher, which is a significant value.

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