PSI - Issue 59

V. Iasnii et al. / Procedia Structural Integrity 59 (2024) 299–306

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V. Iasnii et al./ Structural Integrity Procedia 00 (2019) 000 – 000

a)

b)

Fig. 4. Graph of dependence of (a) stress and (b) axial force on strain.

3. Results and discussions Within this study dynamic calculations of the damping device with an attached point mass were conducted without additional damping force. There is no thermal energy dissipation in the model. The system's energy dissipation occurs only due to the austenitic-martensitic transformations. The model is perturbed by the initial velocity of the point mass v=180mm/s. The change in velocity and displacement are presented in Figure 5.

Fig. 5. The graph of changes in velocity and displacement over time.

Comparing the axial force dependency (Fig. 6) with strain (Fig. 7), one can observe the characteristic influence of plastic strain on axial stresses and force. Figure 5 and Figure 6 detail the distribution of forces, displacements, and stresses in the pseudoelastic body. The following segments can be distinguished on these graphs:  0A - Segment of elastic loading of austenite, characterized by a sudden increase in force in the absence of pseudoelastic strain.  AB - Segment of martensite phase transformation, showing a significant increase in pseudoelastic strain with a slight increase in axial force.