PSI - Issue 36

Yaroslav Shved et al. / Procedia Structural Integrity 36 (2022) 10–16 Yaroslav Shved; Yaroslav Kovalchuk; Liudmyla Bodrova; et al. / Structural Integrity Procedia 00 (2021) 000 – 000

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2

• Set the list of calculation results and perform the calculation. • View calculated results and generate a report.

In Ansys Workbench, at the very beginning of the solution of the task, the type of engineering analysis is chosen. Then the program inserts the corresponding block in the scheme of the project. This block contains all necessary stages of the analysis. 3. Choosing truss design and load scheme for research A study of the strength of the rafter welded truss according to a typical structural scheme was performed (Fig. 2).

Fig. 2. Welded rafter truss for research (a) constructive scheme; (b) general view; (c) the scheme of basing and loading.

The load diagram identifies the operating mode for the studied design of the welded rafter construction truss. 4. The results of the experimental studies of the truss A computer simulation of the behavior under static loads of 18000 × 3600 mm welded rafter truss made of different angular profiles (specified in the table. 1) was performed.

Table 1. Parameters of the angular profile of the elements of 18000 × 3600 mm truss. Indicator 1 2 3

4

5

Angle bar

80 × 80 × 10

90 × 90 × 10

100 × 100 × 10

120 × 120 × 10

140 × 140 × 10

Weight 1 1m., kg

11.73

13.3

14.86 1015

18.0 1229

21.11 1442

Total weight of the truss, kg

801.16

908.4

According to the results of a computer simulation experiment for a welded truss with angular profile dimensions of 80 × 80 × 10 mm the following were obtained: the value of longitudinal deformation, deflection and stresses along the bottom chord of the truss at different load levels on the top chord for the 18000 × 3600 mm truss made of 80 × 80 × 10 mm angle profile under the action of di screte loads both numerically (table 2), full model (Fig. 3) and graphical diagrams (Fig. 4).

Fig. 3. Deformation of 18000 × 3600 mm welded truss made of 80x80x10 mm angle bar at loads at the limit state .