obtaining a design for the circuit, the design including a set of Silicon-on-Insulator (SOI) transistors and a set of nodes, each node corresponding to a node on a SOI transistor in the set of SOI transistors;

generating a behavioral model for the circuit, the generating including:

obtaining an initial charge for a node in the set of nodes based on a non-equilibrium initial condition, the node comprising a body node for a SOI transistor in the set of SOI transistors;

obtaining an initial charge for at least one of the set of nodes based on a DC equilibrium for the node, wherein none of the at least one of the set of nodes is the body node for the SOI transistor;

simulating operation of the circuit over a set of input cycles based on the initial charges for the set of nodes; and

identifying at least one performance attribute for the circuit based on the simulating, the at least one performance attribute comprising at least one of: a delay, a slew, a power consumption, or a leakage, wherein the behavioral model is generated based on the at least one performance attribute;

determining an effect of a transient event on the circuit, the transient event comprising one of: an electrostatic discharge or a charged particle, the determining including:

adjusting an initial charge for at least one of the set of nodes to simulate the transient event;

simulating operation of the circuit over the set of input cycles based on the adjusted initial charge for the at least one of the set of nodes; and

determining the effect of the transient event for the circuit based on the simulating; and

providing the at least one performance attribute, the behavioral model, and the effect of the transient event for use by a user.