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Solid-Shell Elements (/PROP/TSHELL)

Solid-Shell Elements (/PROP/TSHELL)

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Solid-Shell Elements (/PROP/TSHELL)

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Definition

The elements HA8, HEPH and BRICK20 can be transformed to solid-shell elements by setting constant the normal stress through the thickness. This assumption allows obtaining solid elements suitable for thick-shell modeling, where only one element through a thickness can be used. In additional to these elements, SHELL16, PA6 and other solid-shell elements are available.

element_solid-vs-shell

Fig. 2.3: Solid vs. Solid-Shell

Mesh

Element Name

Number of
Integration Points

Hourglass Formulation

hseph

HSEPH

Inplane: 1

In thickness: up to 9

Physical
stabilization

HA8

from 2x2x2 to 9x9x9

---

pa6

PA6

Inplane: 1

In thickness: up to 9

---

shell16

SHELL16

Inplane: 3x3 or 2x2

In thickness: up to 9

---

Table 2.2 Solid-Shell elements

Solid-shell elements, especially SHELL16 can be useful to model thick shell structures with massive junctions (Fig. 2.4). The time step proportion to the shortest distance between two nodes can be small depending on the thickness and material characteristics.

element_application

Fig. 2.4: Application of Solid-Shell Elements