I. Additional Tools

1. Materials

With the help of the Cpiezo button,the user can display properties of the materials stored in the materialsdatabase. Cpiezo is not a complete tool, but it ishelpful for simple cases. The values provided by the MATERIAL entry in the datafile are the best place to check material properties. Depending on the numberof properties, a given material is defined as elastic, fluid orpiezoelectric/magnetostrictive. After clicking on the Cpiezo button, the user must enter the name of the material.

For an elastic material, the longitudinal and transversespeeds are displayed.

For a fluid material, the longitudinal speed is displayed.

For a piezoelectric (magnetostrictive) material, it isassumed that the material belongs to the crystalline class 6mm. The constants sE,sD, cE, cD, d, g, h, e, eS,eT; bSand bT (sH, sB, cH,cB, d, g, h, e, mS, mT; cS and cT) and the coupling factors k33, k13,k15, and kT are displayed.

You can create lossy piezoelectric or magnetostrictivematerials from non-lossy ones, by specifying loss factors on the three mainconstants blocks (Mpiezo).

You can check that a piezoelectric or magnetostrictivematerial is effectively lossy (dissipating, not absorbing heat) (Ppiezo).

Materials Database button will soonbe available.

2. Expert

The Expert menu points to differenttools that are described below.