TY  - EJOU
AU  - Jr., Delfim Soares 

TI  - A Second-order Time-marching Procedure with Enhanced Accuracy
T2  - Computer Modeling in Engineering \& Sciences

PY  - 2015
VL  - 105
IS  - 5
SN  - 1526-1506

AB  - In this work, a second-order time-marching procedure for dynamics is discussed, in which enhanced accuracy is enabled. The new technique is unconditionally stable (according to its parameter selection), it has no amplitude decay or overshooting, and it provides reduced period elongation errors. The method is based on displacement-velocity relations, requiring no computation of accelerations. It is efficient, simple and very easy to implement. Numerical results are presented along the paper, illustrating the good performance of the proposed technique. As it is described here, the new method has no drawbacks when compared to the Trapezoidal Rule (TR), which is one of the most popular time-marching techniques in dynamics, being always more accurate than the TR.
KW  - Time Integration Methods
KW  -  Trapezoidal Rule
KW  -  Central Difference Method
KW  -  Stability
KW  -  Accuracy
KW  -  Period Elongation Errors

DO  - 10.3970/cmes.2015.105.341