BLOCk command - Strip with hole and slit example

[Ashu2912]

Dear FEAPers,

I am new to using the software and have a question regarding the usage of the BLOCk command (after consulting the user manual appendix). In the example (pg. 34 of the manual), the first block of the first quadrant is defined as

Code: [Select]

BLOC
   CART n n d e m
    1 1 0
    2 6 0
    3 6 8
    4 s c
    5 2.6 0
    7 2.1 2.8
    8 a b
    9 2.5 1.2 
My questions are:
(1) Shouldn't the node 4 of the master element block be (0.6, 0.8 ) according to the dimension of base = 6 and height = 8?
(2) What is the implication of entering central nodes that do not lie on their corresponding lines?

Thanks in advance.

[Prof. S. Govindjee]

The best way to figure this out is to graph the locations of the various points (using a piece of paper) -- see Figure 4.4 on page 25 for the node number.  This will then allow you to see what is going on. 

Remark: The master element is a bi-quadratic element, so nodes 5-9 allow for curving of the mesh.